InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 48601. |
Alk aline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergo metal displacement reaction with AgNO_3 solution to form compound (D). |
| Answer» <html><body><p></p>Solution :(i) An alkaline earth (A) metal belongs to third period is magnesium (Mg) <br/>(ii) Magnesium <a href="https://interviewquestions.tuteehub.com/tag/reacts-1178303" style="font-weight:bold;" target="_blank" title="Click to know more about REACTS">REACTS</a> with oxygen to form magnesium oxide (MgO) (B) <br/>`2Mg +O_(2)tounderset(Magnesium oxide)(2MgO_(2))` <br/>(iii) Magnesium reacts with <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a> to form magnesium nitride `Mg_(3)N_(2)(C)` <br/>`3Mg+N_(2)O_(2)tounderset("Magnesium nitride")(Mg_(3)O)` <br/>(iv) Magnesium <a href="https://interviewquestions.tuteehub.com/tag/undergoes-1436539" style="font-weight:bold;" target="_blank" title="Click to know more about UNDERGOES">UNDERGOES</a> metal displacement reaction with `AgNO_(3)` solution to form magnesium nitrate `Mg(NO_(3))_(2) (D)` <br/>`Mg+2AgNO_(3) tounderset("Magnesium nitrate") (Mg(NO_(3))_(2) +)<a href="https://interviewquestions.tuteehub.com/tag/2ag-300272" style="font-weight:bold;" target="_blank" title="Click to know more about 2AG">2AG</a>` <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/FM_CHE_XI_V01_C05_E01_035_S01.png" width="80%"/></body></html> | |
| 48602. |
Alkali metals when exposed to air tarnish quickly due to the |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/formation-996531" style="font-weight:bold;" target="_blank" title="Click to know more about FORMATION">FORMATION</a> of their <a href="https://interviewquestions.tuteehub.com/tag/hydroxides-1034429" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROXIDES">HYDROXIDES</a> <br/>Formation of their <a href="https://interviewquestions.tuteehub.com/tag/carbonates-413333" style="font-weight:bold;" target="_blank" title="Click to know more about CARBONATES">CARBONATES</a> <br/>Formation of their <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a> <br/>All the above </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 48603. |
Alkali metals used in photoelectric cells |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/li-1072885" style="font-weight:bold;" target="_blank" title="Click to know more about LI">LI</a>`<br/>`Li, <a href="https://interviewquestions.tuteehub.com/tag/na-572417" style="font-weight:bold;" target="_blank" title="Click to know more about NA">NA</a>`<br/>`Li, Na, <a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a>`<br/>`K, <a href="https://interviewquestions.tuteehub.com/tag/cs-428076" style="font-weight:bold;" target="_blank" title="Click to know more about CS">CS</a>`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 48604. |
Alkali metalstaenishin dryairbecause______. |
| Answer» <html><body><p>theyreactwithoxygento formcorrespodingoxides <br/>theyreactwithnitrogen toformcorrespondingnitides <br/>theyhydrogentoform correspondinghydrides <br/>theyreactwithhalogensto formcorrespondinghalides </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 48605. |
Alkali metals readily react with oxyacids forming corresponding salts (like M_(2)CO_(3), MHCO_(3), MNO_(3), M_(2)SO_(4) etc) with evolution of hydrogen. They also dissolve in liquid NH3 but without the evolution of hydrogen. The colour of its dilute solution is blue when it is heated and concentrated, then its colour becomes bronze Among the carbonates of alkali metals which one has highest stability |
| Answer» <html><body><p>`Cs_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)CO_(3)`<br/>`Rb_(2)CO_(3)`<br/>`K_(2)CO_(3)`<br/>`Na_(2)CO_(3)`</p>Solution :In alkali metl carbonaties from top to bottom stability increases due to decreasing of crystal <a href="https://interviewquestions.tuteehub.com/tag/lattice-1069551" style="font-weight:bold;" target="_blank" title="Click to know more about LATTICE">LATTICE</a> <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> of their corresponding <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a></body></html> | |
| 48606. |
Alkali metals react with water vigorously to form hydroxides and dihydrogen . Which of the following alkali metal reacts with water least vigorously ? |
| Answer» <html><body><p>Li <br/>Na <br/>K <br/>Cs</p>Solution :Both m.p. and heat of the reaction of alkali metals with `H_(2)O` decreases down the group from Li to Cs . <br/> Although the heat of reaction of Li is thehighest but <a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to its high melting <a href="https://interviewquestions.tuteehub.com/tag/point-1157106" style="font-weight:bold;" target="_blank" title="Click to know more about POINT">POINT</a> , <a href="https://interviewquestions.tuteehub.com/tag/even-976335" style="font-weight:bold;" target="_blank" title="Click to know more about EVEN">EVEN</a> the heat is not sufficient to melt the <a href="https://interviewquestions.tuteehub.com/tag/metal-1094457" style="font-weight:bold;" target="_blank" title="Click to know more about METAL">METAL</a> thereby exposing greater surface to water for reaction . as a result , Li has the least reactivity by the reactivity increases as the m.p. of the alkali metals decrease down the group from Li to Cs .</body></html> | |
| 48607. |
Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously? |
| Answer» <html><body><p>Li <br/>Na <br/>K <br/><a href="https://interviewquestions.tuteehub.com/tag/cs-428076" style="font-weight:bold;" target="_blank" title="Click to know more about CS">CS</a> </p>Solution :Li has very high <a href="https://interviewquestions.tuteehub.com/tag/enthalpy-15226" style="font-weight:bold;" target="_blank" title="Click to know more about ENTHALPY">ENTHALPY</a> of hydration, therefore the reaction between Li and water is <a href="https://interviewquestions.tuteehub.com/tag/highly-2102664" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHLY">HIGHLY</a> exothermic but the energy evolved is consumed in fusion, vaporisation, and ionisation as a result reaction with water proceeds <a href="https://interviewquestions.tuteehub.com/tag/slowly-2273700" style="font-weight:bold;" target="_blank" title="Click to know more about SLOWLY">SLOWLY</a>.</body></html> | |
| 48608. |
Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/li-1072885" style="font-weight:bold;" target="_blank" title="Click to know more about LI">LI</a><br/>Na<br/>K<br/>Cs</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to high melting pointeven thought Li has high <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> of hydration it is not sufficientto melt which exposes greatest surface to water for a reaction<br/> `<a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>`Li has least <a href="https://interviewquestions.tuteehub.com/tag/reactivity-1178275" style="font-weight:bold;" target="_blank" title="Click to know more about REACTIVITY">REACTIVITY</a></body></html> | |
| 48609. |
Alkali metalsreactoxygento form_______ |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/nitrogengas-2869952" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGENGAS">NITROGENGAS</a> <br/> oxygengas <br/> <a href="https://interviewquestions.tuteehub.com/tag/chlorinegas-2026751" style="font-weight:bold;" target="_blank" title="Click to know more about CHLORINEGAS">CHLORINEGAS</a> <br/> <a href="https://interviewquestions.tuteehub.com/tag/hydrogengas-2722400" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROGENGAS">HYDROGENGAS</a> </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 48610. |
Alkalimetals(otherthanlithium) formamidesof thegeneralformula ______. |
| Answer» <html><body><p>MNH<br/>`MNH_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)`<br/>`M_(2) <a href="https://interviewquestions.tuteehub.com/tag/nh-570695" style="font-weight:bold;" target="_blank" title="Click to know more about NH">NH</a>`<br/>`M_(3)N`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48611. |
Alkali metals on reaction with enough amount of oxygen can form... |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/super-1234719" style="font-weight:bold;" target="_blank" title="Click to know more about SUPER">SUPER</a> oxide<br/>Oxide<br/>Monoxide<br/>Peroxide</p>Answer :D</body></html> | |
| 48612. |
Alkali metals never found in free state in nature. Why? |
| Answer» <html><body><p></p>Solution :The loosely <a href="https://interviewquestions.tuteehub.com/tag/held-7620091" style="font-weight:bold;" target="_blank" title="Click to know more about HELD">HELD</a> "s" <a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> in the outermost shell of these elements make them electropositive <a href="https://interviewquestions.tuteehub.com/tag/metals-1094891" style="font-weight:bold;" target="_blank" title="Click to know more about METALS">METALS</a>. They readily lose electron to give monovalent M ions. <a href="https://interviewquestions.tuteehub.com/tag/hen-1018237" style="font-weight:bold;" target="_blank" title="Click to know more about HEN">HEN</a> never found in free state in nature.</body></html> | |
| 48613. |
Alkali metals loseelectronsin _______. |
| Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>>s-<a href="https://interviewquestions.tuteehub.com/tag/orbitals-1138192" style="font-weight:bold;" target="_blank" title="Click to know more about ORBITALS">ORBITALS</a> <br/>p- orbitals <br/>d-orbitals <br/>f-orbitals </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 48614. |
Alkali metals impart colour to bunsen flame due to |
| Answer» <html><body><p>low ionization <a href="https://interviewquestions.tuteehub.com/tag/energies-971455" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGIES">ENERGIES</a> <br/>low melting <a href="https://interviewquestions.tuteehub.com/tag/points-1157347" style="font-weight:bold;" target="_blank" title="Click to know more about POINTS">POINTS</a> <br/>thier softness <br/>the presence of <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a> electron in the outer most <a href="https://interviewquestions.tuteehub.com/tag/shell-11505" style="font-weight:bold;" target="_blank" title="Click to know more about SHELL">SHELL</a> </p>Answer :A</body></html> | |
| 48615. |
Alkali metals have negative reduction potential and hence they behave as |
| Answer» <html><body><p>Oxidising agents<br/>Lewis base<br/>reducing agents <br/>electrolytes. </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :(C ) Alkali <a href="https://interviewquestions.tuteehub.com/tag/metals-1094891" style="font-weight:bold;" target="_blank" title="Click to know more about METALS">METALS</a> have high negative <a href="https://interviewquestions.tuteehub.com/tag/reduction-621019" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCTION">REDUCTION</a> <a href="https://interviewquestions.tuteehub.com/tag/potential-1161228" style="font-weight:bold;" target="_blank" title="Click to know more about POTENTIAL">POTENTIAL</a> i.e., they can easily lose one electron. Hence they behave as reducing agents.</body></html> | |
| 48616. |
Alkali metals have low melting and boiling point. Density of alkali metals is very low. Give reason |
| Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/lt-537906" style="font-weight:bold;" target="_blank" title="Click to know more about LT">LT</a> is <a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to weak metallic <a href="https://interviewquestions.tuteehub.com/tag/bonds-900666" style="font-weight:bold;" target="_blank" title="Click to know more about BONDS">BONDS</a> and large atomic <a href="https://interviewquestions.tuteehub.com/tag/size-1211196" style="font-weight:bold;" target="_blank" title="Click to know more about SIZE">SIZE</a>.</body></html> | |
| 48617. |
Alkali metals give colour in Bunsen flame due to |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/low-537644" style="font-weight:bold;" target="_blank" title="Click to know more about LOW">LOW</a> <a href="https://interviewquestions.tuteehub.com/tag/ionisation-1051250" style="font-weight:bold;" target="_blank" title="Click to know more about IONISATION">IONISATION</a> <a href="https://interviewquestions.tuteehub.com/tag/potential-1161228" style="font-weight:bold;" target="_blank" title="Click to know more about POTENTIAL">POTENTIAL</a><br/>low m.p.<br/>softness<br/>one <a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> in the <a href="https://interviewquestions.tuteehub.com/tag/outermost-1142685" style="font-weight:bold;" target="_blank" title="Click to know more about OUTERMOST">OUTERMOST</a> orbit.</p>Solution : low ionisation potential</body></html> | |
| 48618. |
Alkali metals exhibit high chemical reactivity Give reason. |
| Answer» <html><body><p></p>Solution :(i) Alkali metals exhibit high chemical reactivity because of their low ionization enhalphy and their larger <a href="https://interviewquestions.tuteehub.com/tag/size-1211196" style="font-weight:bold;" target="_blank" title="Click to know more about SIZE">SIZE</a> <br/> (ii) The reactivity of alkali metals increases from Li to <a href="https://interviewquestions.tuteehub.com/tag/cs-428076" style="font-weight:bold;" target="_blank" title="Click to know more about CS">CS</a>, since the value of ionization energy decreases down the group (from Li to Cs) <br/> (iii) All alkali metals are highly reactive <a href="https://interviewquestions.tuteehub.com/tag/towards-7269729" style="font-weight:bold;" target="_blank" title="Click to know more about TOWARDS">TOWARDS</a> the more <a href="https://interviewquestions.tuteehub.com/tag/electronegative-2608055" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONEGATIVE">ELECTRONEGATIVE</a> elements such as oxygen and <a href="https://interviewquestions.tuteehub.com/tag/halogens-1015124" style="font-weight:bold;" target="_blank" title="Click to know more about HALOGENS">HALOGENS</a>.</body></html> | |
| 48619. |
Alkali metals are usually stored in hydrocarbon solvents to protect them from air and moisture but lithium cannot . Why ? |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Lithium cannot be <a href="https://interviewquestions.tuteehub.com/tag/stored-7260220" style="font-weight:bold;" target="_blank" title="Click to know more about STORED">STORED</a> in <a href="https://interviewquestions.tuteehub.com/tag/kerosene-532223" style="font-weight:bold;" target="_blank" title="Click to know more about KEROSENE">KEROSENE</a> oil since it floatsover kerosene and other hydrocarbon solvents because of its very low density . Therefore , lithium is usually kept <a href="https://interviewquestions.tuteehub.com/tag/wrapped-7379953" style="font-weight:bold;" target="_blank" title="Click to know more about WRAPPED">WRAPPED</a> in paraffin wax.</body></html> | |
| 48620. |
Alkali metals contain |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/7-332378" style="font-weight:bold;" target="_blank" title="Click to know more about 7">7</a> <a href="https://interviewquestions.tuteehub.com/tag/valence-1442169" style="font-weight:bold;" target="_blank" title="Click to know more about VALENCE">VALENCE</a> electrons<br/><a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> valence <a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a><br/>4 valence electrons<br/>2 valence electrons.</p>Solution :1 valence electron</body></html> | |
| 48621. |
Alkali metals are strongly electropositive or metalic in character. Why ? |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Alkali metals are strongly electropositve because of their low <a href="https://interviewquestions.tuteehub.com/tag/ionization-519228" style="font-weight:bold;" target="_blank" title="Click to know more about IONIZATION">IONIZATION</a> enthalpies, these metals have a strong tendency to <a href="https://interviewquestions.tuteehub.com/tag/lose-537625" style="font-weight:bold;" target="_blank" title="Click to know more about LOSE">LOSE</a> their valence electrons.</body></html> | |
| 48622. |
Alkali metals are soft and have low melting point and boiling point due to |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/inter-499525" style="font-weight:bold;" target="_blank" title="Click to know more about INTER">INTER</a> atomic <a href="https://interviewquestions.tuteehub.com/tag/bonds-900666" style="font-weight:bold;" target="_blank" title="Click to know more about BONDS">BONDS</a> are weak<br/>Inter atomic bonds are strong<br/>Low ionisation potential<br/>Smaller atomic <a href="https://interviewquestions.tuteehub.com/tag/size-1211196" style="font-weight:bold;" target="_blank" title="Click to know more about SIZE">SIZE</a> </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 48623. |
Alkali metals are stored under oil. Give reason. |
| Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/alkali-853286" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALI">ALKALI</a> <a href="https://interviewquestions.tuteehub.com/tag/metals-1094891" style="font-weight:bold;" target="_blank" title="Click to know more about METALS">METALS</a> are so <a href="https://interviewquestions.tuteehub.com/tag/reactive-1178230" style="font-weight:bold;" target="_blank" title="Click to know more about REACTIVE">REACTIVE</a> and they have to be <a href="https://interviewquestions.tuteehub.com/tag/stored-7260220" style="font-weight:bold;" target="_blank" title="Click to know more about STORED">STORED</a> under <a href="https://interviewquestions.tuteehub.com/tag/oil-1129840" style="font-weight:bold;" target="_blank" title="Click to know more about OIL">OIL</a>. Because when they are kept in air, they will burn immediately.</body></html> | |
| 48624. |
Alkali metals are stored in... |
| Answer» <html><body><p>Water<br/>Kerosene<br/>Alcohol<br/>Acid</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48625. |
Alkali metals are so named because |
| Answer» <html><body><p>of their <a href="https://interviewquestions.tuteehub.com/tag/large-1066424" style="font-weight:bold;" target="_blank" title="Click to know more about LARGE">LARGE</a> atomic sizes <br/>of their <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a> give strong bases in water <br/>of their high reactivity in air <br/>of their colours <a href="https://interviewquestions.tuteehub.com/tag/imparted-2728440" style="font-weight:bold;" target="_blank" title="Click to know more about IMPARTED">IMPARTED</a> in <a href="https://interviewquestions.tuteehub.com/tag/bunsen-403938" style="font-weight:bold;" target="_blank" title="Click to know more about BUNSEN">BUNSEN</a> flame </p>Answer :B</body></html> | |
| 48626. |
Alkali metals are paramagentic but their salts are diamagnetic . Explain . |
| Answer» <html><body><p></p>Solution :Alkali metals contain one unpaired electron `(ns^(1))` and hence are paramagnetic . However , during <a href="https://interviewquestions.tuteehub.com/tag/salt-1193804" style="font-weight:bold;" target="_blank" title="Click to know more about SALT">SALT</a> formation , this unpaired electron is transferred to the non-metallic atom forming its anion . As a result , salt has <a href="https://interviewquestions.tuteehub.com/tag/paired-7705846" style="font-weight:bold;" target="_blank" title="Click to know more about PAIRED">PAIRED</a> <a href="https://interviewquestions.tuteehub.com/tag/electrons-969138" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONS">ELECTRONS</a> both in the <a href="https://interviewquestions.tuteehub.com/tag/cation-910854" style="font-weight:bold;" target="_blank" title="Click to know more about CATION">CATION</a> as well as in the anion and hence alkali metal salts are diamagnetic in <a href="https://interviewquestions.tuteehub.com/tag/nature-1112013" style="font-weight:bold;" target="_blank" title="Click to know more about NATURE">NATURE</a> .</body></html> | |
| 48627. |
Alkali metals are kept under ........because they are highly........and get .....when exposed to air. |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/kerosene-532223" style="font-weight:bold;" target="_blank" title="Click to know more about KEROSENE">KEROSENE</a>, <a href="https://interviewquestions.tuteehub.com/tag/reactive-1178230" style="font-weight:bold;" target="_blank" title="Click to know more about REACTIVE">REACTIVE</a>, <a href="https://interviewquestions.tuteehub.com/tag/tarnished-7717325" style="font-weight:bold;" target="_blank" title="Click to know more about TARNISHED">TARNISHED</a></body></html> | |
| 48628. |
Alkali metals are highly reactive due to.... |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/smaller-1213327" style="font-weight:bold;" target="_blank" title="Click to know more about SMALLER">SMALLER</a> <a href="https://interviewquestions.tuteehub.com/tag/size-1211196" style="font-weight:bold;" target="_blank" title="Click to know more about SIZE">SIZE</a> and low <a href="https://interviewquestions.tuteehub.com/tag/ionization-519228" style="font-weight:bold;" target="_blank" title="Click to know more about IONIZATION">IONIZATION</a> <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a>. <br/>Higher size and low ionization energy. <br/>Smaller size and high ionization energy.<br/> Higher size and high ionization energy.</p>Answer :B</body></html> | |
| 48629. |
Alkali metals are good conductors of electricity. Why? |
| Answer» <html><body><p></p>Solution :Alkali metals have low ionization energy. Hence they <a href="https://interviewquestions.tuteehub.com/tag/show-642916" style="font-weight:bold;" target="_blank" title="Click to know more about SHOW">SHOW</a> <a href="https://interviewquestions.tuteehub.com/tag/metallic-547634" style="font-weight:bold;" target="_blank" title="Click to know more about METALLIC">METALLIC</a> <a href="https://interviewquestions.tuteehub.com/tag/character-914164" style="font-weight:bold;" target="_blank" title="Click to know more about CHARACTER">CHARACTER</a>. They are good conductors of electricity <a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to the presence of mobile valence <a href="https://interviewquestions.tuteehub.com/tag/electrons-969138" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONS">ELECTRONS</a>.</body></html> | |
| 48630. |
Alkali metals are good |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/oxidising-2209005" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDISING">OXIDISING</a> <a href="https://interviewquestions.tuteehub.com/tag/agents-17824" style="font-weight:bold;" target="_blank" title="Click to know more about AGENTS">AGENTS</a><br/><a href="https://interviewquestions.tuteehub.com/tag/reducing-2981618" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCING">REDUCING</a> agent<br/>Bleaching agents<br/>dehydrating agent</p>Solution :Due to low I.E they acts as <a href="https://interviewquestions.tuteehub.com/tag/good-1009017" style="font-weight:bold;" target="_blank" title="Click to know more about GOOD">GOOD</a> reducing agents</body></html> | |
| 48631. |
Alkali metals are characterised by |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/good-1009017" style="font-weight:bold;" target="_blank" title="Click to know more about GOOD">GOOD</a> <a href="https://interviewquestions.tuteehub.com/tag/conductor-928880" style="font-weight:bold;" target="_blank" title="Click to know more about CONDUCTOR">CONDUCTOR</a> of heat and electricity<br/>High oxidation potential <br/>High <a href="https://interviewquestions.tuteehub.com/tag/melting-1093090" style="font-weight:bold;" target="_blank" title="Click to know more about MELTING">MELTING</a> point<br/>Solubility in liquid ammonia.</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/alkali-853286" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALI">ALKALI</a> metals have low melting points.</body></html> | |
| 48632. |
Alkali metal iodide(s) aqueous solution(s) of which can dissolve I_(2) to form MI_(3) is (are) |
| Answer» <html><body><p>K<br/>Na<br/>Rb<br/>Cs.</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/sodium-1215510" style="font-weight:bold;" target="_blank" title="Click to know more about SODIUM">SODIUM</a> cannot <a href="https://interviewquestions.tuteehub.com/tag/form-996208" style="font-weight:bold;" target="_blank" title="Click to know more about FORM">FORM</a> <a href="https://interviewquestions.tuteehub.com/tag/polyhalide-2938827" style="font-weight:bold;" target="_blank" title="Click to know more about POLYHALIDE">POLYHALIDE</a> of the form `MI_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`</body></html> | |
| 48633. |
Alkali metal oxides are soluble in |
| Answer» <html><body><p>Carbon tetrachloride <br/>Benzene<br/>Water <br/>Kerosene oil. </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to high <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> of hydration which can <a href="https://interviewquestions.tuteehub.com/tag/overcome-7267572" style="font-weight:bold;" target="_blank" title="Click to know more about OVERCOME">OVERCOME</a> the lattice <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a>.</body></html> | |
| 48634. |
Alkali metal hydrides are strong reducing agents. Prove this statement. |
| Answer» <html><body><p></p>Solution :The decrease in <a href="https://interviewquestions.tuteehub.com/tag/ionization-519228" style="font-weight:bold;" target="_blank" title="Click to know more about IONIZATION">IONIZATION</a> <a href="https://interviewquestions.tuteehub.com/tag/enthalpy-15226" style="font-weight:bold;" target="_blank" title="Click to know more about ENTHALPY">ENTHALPY</a> down the group permits easy availability of electrons to forms `H^(+)` ions. So, the hydrides <a href="https://interviewquestions.tuteehub.com/tag/behave-894568" style="font-weight:bold;" target="_blank" title="Click to know more about BEHAVE">BEHAVE</a> as reducing agent. Their reducing nature <a href="https://interviewquestions.tuteehub.com/tag/increases-1040626" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASES">INCREASES</a> down the group</body></html> | |
| 48635. |
Alkali metal halides can be prepared by the reaction of aquesous hydrohalic acid with |
| Answer» <html><body><p>Alkali <a href="https://interviewquestions.tuteehub.com/tag/metal-1094457" style="font-weight:bold;" target="_blank" title="Click to know more about METAL">METAL</a> oxide <br/>Alkalimetal hydroxide <br/>Alkali metal <a href="https://interviewquestions.tuteehub.com/tag/carbonate-909380" style="font-weight:bold;" target="_blank" title="Click to know more about CARBONATE">CARBONATE</a> <br/>Any of the above </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 48636. |
Alkali metal element have low melting point and boiling point, because... |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/weak-729638" style="font-weight:bold;" target="_blank" title="Click to know more about WEAK">WEAK</a> metallic bond.<br/>strong metallic bond.<br/>weak <a href="https://interviewquestions.tuteehub.com/tag/covalent-427060" style="font-weight:bold;" target="_blank" title="Click to know more about COVALENT">COVALENT</a> bond.<br/>strong <a href="https://interviewquestions.tuteehub.com/tag/attraction-887653" style="font-weight:bold;" target="_blank" title="Click to know more about ATTRACTION">ATTRACTION</a> towards valence electron.</p>Answer :A</body></html> | |
| 48637. |
Alkali metal carbonates are stable but carbonates of alkaline earth metals decompose on heating to liberate CO_(2) Why? |
| Answer» <html><body><p></p>Solution :Polarising power of <a href="https://interviewquestions.tuteehub.com/tag/alkaline-371462" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALINE">ALKALINE</a> earth metal cations is more than that of alkali metal cations because of small size and <a href="https://interviewquestions.tuteehub.com/tag/high-479925" style="font-weight:bold;" target="_blank" title="Click to know more about HIGH">HIGH</a> charge. Alkaline earth metal cations polarise a large `CO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)^(2-)` ion leading to the formation of more stable oxide (<a href="https://interviewquestions.tuteehub.com/tag/mo-548568" style="font-weight:bold;" target="_blank" title="Click to know more about MO">MO</a>) and liberate `CO_(2)` gas. <br/> `MCO_(3)rarrMO+CO_(2)<a href="https://interviewquestions.tuteehub.com/tag/uarr-3241817" style="font-weight:bold;" target="_blank" title="Click to know more about UARR">UARR</a>`</body></html> | |
| 48638. |
Alkali metal are __________ reactive. |
| Answer» <html><body><p>highly<br/>lower<br/>very low<br/>less than matels</p>Answer :A</body></html> | |
| 48639. |
Alkali elements exhibit an oxidation state of __________ |
| Answer» <html><body><p>`+<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>`<br/>`+<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>`<br/>`+<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>`<br/>`+<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 48640. |
Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements . They have low ionization enthalpies and hence exhibit characteristic flame colouration . They have highly negative electrode potentials and hence are strong reducing agents . Their solutions in liquid ammonia are conducting and also act as strong reducing agents than hydrogen , they are usually prepared by electrolysis of their fused chlorides . Their oxides are basic and the basic strength increases down the group . The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends . The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating . The bicarbonates of both alkali and alkaline earth metals on heating give carbonates . Which of the following process is used in the extractive metallurgy of magnesium ? |
| Answer» <html><body><p>fused salt electrolysis <br/>self <a href="https://interviewquestions.tuteehub.com/tag/reduction-621019" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCTION">REDUCTION</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/aqueous-2440179" style="font-weight:bold;" target="_blank" title="Click to know more about AQUEOUS">AQUEOUS</a> solution electrolysis <br/>thermite reduction </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 48641. |
Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements . They have low ionization enthalpies and hence exhibit characteristic flame colouration . They have highly negative electrode potentials and hence are strong reducing agents . Their solutions in liquid ammonia are conducting and also act as strong reducing agents than hydrogen , they are usually prepared by electrolysis of their fused chlorides . Their oxides are basic and the basic strength increases down the group . The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends . The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating . The bicarbonates of both alkali and alkaline earth metals on heating give carbonates . The metal that produces red-violed colour in the non-luminous flame is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/ba-389206" style="font-weight:bold;" target="_blank" title="Click to know more about BA">BA</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/rb-613080" style="font-weight:bold;" target="_blank" title="Click to know more about RB">RB</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/mg-1095425" style="font-weight:bold;" target="_blank" title="Click to know more about MG">MG</a> <br/>K </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48642. |
Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements . They have low ionization enthalpies and hence exhibit characteristic flame colouration . They have highly negative electrode potentials and hence are strong reducing agents . Their solutions in liquid ammonia are conducting and also act as strong reducing agents than hydrogen , they are usually prepared by electrolysis of their fused chlorides . Their oxides are basic and the basic strength increases down the group . The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends . The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating . The bicarbonates of both alkali and alkaline earth metals on heating give carbonates . The compound insoluble in acetic acid is |
| Answer» <html><body><p>calcium oxide <br/>calcium carbonate <br/>calcium oxalate <br/>calcium <a href="https://interviewquestions.tuteehub.com/tag/hydroxide-493242" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROXIDE">HYDROXIDE</a> . </p>Solution :`CaO , CaCO_(3)` and `Ca(OH)_(2)` are all bases and hence must <a href="https://interviewquestions.tuteehub.com/tag/dissolve-432057" style="font-weight:bold;" target="_blank" title="Click to know more about DISSOLVE">DISSOLVE</a> in <a href="https://interviewquestions.tuteehub.com/tag/acetic-1967065" style="font-weight:bold;" target="_blank" title="Click to know more about ACETIC">ACETIC</a> acid to form calcium acetate . Only calcium oxalate does not dissolve in `CH_(3)COOH` .</body></html> | |
| 48643. |
Alkali and alkaline earth metals cannot be obtained by chemical reduction method . Explain . |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/since-644476" style="font-weight:bold;" target="_blank" title="Click to know more about SINCE">SINCE</a> they are themselves stronger <a href="https://interviewquestions.tuteehub.com/tag/reducing-2981618" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCING">REDUCING</a> agents thanmajority of the <a href="https://interviewquestions.tuteehub.com/tag/common-923599" style="font-weight:bold;" target="_blank" title="Click to know more about COMMON">COMMON</a> reducing agents used .</body></html> | |
| 48644. |
Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements . They have low ionization enthalpies and hence exhibit characteristic flame colouration . They have highly negative electrode potentials and hence are strong reducing agents . Their solutions in liquid ammonia are conducting and also act as strong reducing agents than hydrogen , they are usually prepared by electrolysis of their fused chlorides . Their oxides are basic and the basic strength increases down the group . The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends . The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating . The bicarbonates of both alkali and alkaline earth metals on heating give carbonates . Which of the following are arranged in increasing order of solubilities ? |
| Answer» <html><body><p>`CaCO_(3) lt KHCO_(3) lt NaHCO_(3)`<br/>`NaHCO_(3) lt KHCO_(3) lt CaCO_(3)`<br/>`KHCO_(3) lt NaHCO_(3) lt CaCO_(3)`<br/>`CaCO_(3) lt NaHCO_(3) lt KHCO_(3)`.</p>Solution :The solubility of bicarbonates of <a href="https://interviewquestions.tuteehub.com/tag/alkali-853286" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALI">ALKALI</a> metals increases down the <a href="https://interviewquestions.tuteehub.com/tag/group-1013370" style="font-weight:bold;" target="_blank" title="Click to know more about GROUP">GROUP</a> . But <a href="https://interviewquestions.tuteehub.com/tag/alkaline-371462" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALINE">ALKALINE</a> earth metal carbonates are insoluble in `H_(2)O` , i.e., option (d) is <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> .</body></html> | |
| 48645. |
Alkali and alkaline earth metals along with hydrogen and helium constitute s-block elements . They have low ionization enthalpies and hence exhibit characteristic flame colouration . They have highly negative electrode potentials and hence are strong reducing agents . Their solutions in liquid ammonia are conducting and also act as strong reducing agents than hydrogen , they are usually prepared by electrolysis of their fused chlorides . Their oxides are basic and the basic strength increases down the group . The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends . The carbonates of alkaline earth metals and lithium carbonate decompose on heating while the carbonates of other alkali metals do not decompose on heating . The bicarbonates of both alkali and alkaline earth metals on heating give carbonates . The basic character of the oxides , MgO , SrO , K_(2)O , NiO and Cs_(2)O increases in the order : |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/mgo-559724" style="font-weight:bold;" target="_blank" title="Click to know more about MGO">MGO</a> gt Sr O gt K_(2)O gt <a href="https://interviewquestions.tuteehub.com/tag/nio-578272" style="font-weight:bold;" target="_blank" title="Click to know more about NIO">NIO</a> gt Cs_(2)`<br/>`Cs_(2) lt K_(2)O lt MgO lt SrO lt NiO`<br/>`NiO lt MgO lt SrO lt K_(2)O lt Cs_(2)O`<br/>`K_(2)O ltNiO lt MgO lt SrO lt Cs_(2)`</p>Solution :Alkali metal <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a> are most basic followed by alkaline earth metal oxides while transition metal oxides are <a href="https://interviewquestions.tuteehub.com/tag/least-7256596" style="font-weight:bold;" target="_blank" title="Click to know more about LEAST">LEAST</a> basic . Amongst alkali and alkaline earth metal oxides , basicity increases down the group . Thus , `Cs_(2)O` is more basic than `K_(2)O` and `SrO` is more basic than MgO . therefore , the overall order is `: NiO lt MgO lt SrO lt K_(2)O lt Cs_(2)O`.</body></html> | |
| 48646. |
Aliphatic saturated hydrocarbon can give |
| Answer» <html><body><p>Addition reaction <br/><a href="https://interviewquestions.tuteehub.com/tag/elimination-450328" style="font-weight:bold;" target="_blank" title="Click to know more about ELIMINATION">ELIMINATION</a> reaction <br/>Both (a) and (<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>) <br/><a href="https://interviewquestions.tuteehub.com/tag/substitution-1231654" style="font-weight:bold;" target="_blank" title="Click to know more about SUBSTITUTION">SUBSTITUTION</a> reaction </p>Solution :Saturated <a href="https://interviewquestions.tuteehub.com/tag/hydrocarbons-15156" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROCARBONS">HYDROCARBONS</a> substitution reaction is possible as all are <a href="https://interviewquestions.tuteehub.com/tag/single-644669" style="font-weight:bold;" target="_blank" title="Click to know more about SINGLE">SINGLE</a> bonds</body></html> | |
| 48647. |
Aliphatic nulcleophilic substitution reactions take places either by ______ or _______ mechanism . |
| Answer» <html><body><p>`S_(N)""^(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>) , S_(N)""^(2)` <br/>`E_(1), E_(2) ` <br/>`<a href="https://interviewquestions.tuteehub.com/tag/addition-367641" style="font-weight:bold;" target="_blank" title="Click to know more about ADDITION">ADDITION</a> , substitution <br/> Replacement , <a href="https://interviewquestions.tuteehub.com/tag/condense-928607" style="font-weight:bold;" target="_blank" title="Click to know more about CONDENSE">CONDENSE</a> </p>Solution :N/A</body></html> | |
| 48648. |
Alicyclic compounds are : |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/aromatic-363924" style="font-weight:bold;" target="_blank" title="Click to know more about AROMATIC">AROMATIC</a> compounds<br/>Aliphatic <a href="https://interviewquestions.tuteehub.com/tag/cyclic-2559324" style="font-weight:bold;" target="_blank" title="Click to know more about CYCLIC">CYCLIC</a> compounds<br/>Heterocyclic compounds<br/>None of these</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48649. |
AlH_(3) is an example for |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/interstitial-2132733" style="font-weight:bold;" target="_blank" title="Click to know more about INTERSTITIAL">INTERSTITIAL</a> hydride <br/><a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> <a href="https://interviewquestions.tuteehub.com/tag/rich-614275" style="font-weight:bold;" target="_blank" title="Click to know more about RICH">RICH</a> hydride <br/>Ionic hydride <br/>Electron deficient hydride </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 48650. |
AlF_(3) soluble in HF only in presence of KF. It is due to the formation of |
| Answer» <html><body><p>`K_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)[AlF_(3)H_(3)]`<br/>`K_(3)[AlF_(6)]`<br/>`AlH_(3)`<br/>`Kl[AlF_(3)H]`</p>Solution :Anhydrous`HF` is a covalentcompoundand is stronglyH-bounded . <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>, it does not give `<a href="https://interviewquestions.tuteehub.com/tag/f-455800" style="font-weight:bold;" target="_blank" title="Click to know more about F">F</a>^(-)`ions andhence `AlF_(3)`does notcompoundcontains `F^(-)` ions. Therefore, it combineswith `AlF_(3)` to form <a href="https://interviewquestions.tuteehub.com/tag/soluble-3046305" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUBLE">SOLUBLE</a> <a href="https://interviewquestions.tuteehub.com/tag/complex-926309" style="font-weight:bold;" target="_blank" title="Click to know more about COMPLEX">COMPLEX</a>, `K_(3)[AlF_(6)]` <br/> `AlF_(3) + 3KF rarr K_(3)[AlF_(6)]`</body></html> | |