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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 3351. |
Write general properties of ionic compounds |
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Answer» Answer: PROPERTIES Shared by Ionic Compounds They FORM crystals. ... They have high melting points and high boiling points. ... They have higher enthalpies of fusion and vaporization than molecular compounds. ... They're hard and brittle. ... They conduct electricity when they are dissolved in WATER. ... They're GOOD insulators. |
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| 3352. |
What is cathode and anode |
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Answer» Answer: Cathode When we talk about cathode in chemistry, it is SAID to be the ELECTRODE where reduction occurs. Anode In the most basic form, an anode in electrochemistry is the point where an OXIDATION reaction occurs. Explanation: i hope it HELPS you..... |
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| 3353. |
How many ionization energy can have carbon 1)6 2)4. 3)3 4)2 |
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Answer» Answer: carbon has 6 electrons.Thus 6 electrons can be REMOVED and THEREFORE can have 6 ionization energies. Explanation: hope it helps...... |
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| 3354. |
What are 2 methods using graphical analysis to determine the half-life of a radioactive isotope? Explain both methods. |
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Answer» hii |
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| 3355. |
Chemical reaction of heat on lime stone |
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Answer» The chemical reaction that takes PLACE when limestone is heated is CaCo3 CAO + CO2. Decomposition takes place when limestone is heated strongly. This reaction HELPS in forming calcium OXIDE (CaO) and carbon dioxide (CO2). Therefore, the word EQUATION will be Calcium Carbonate Calcium oxide + carbon dioxide This process is known as decomposition. |
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| 3356. |
What is valency? Write the balance chemical eqution of given word eqution |
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| 3357. |
Who discovered electromagnetic theory |
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Answer» the electromagnetic theory was discovered by James CLERIC Maxwell✔✔ |
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| 3358. |
Who discovered second law of thermodynamics |
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Answer» KELVIN William Thomson DISCOVERED SECOND LAW of thermodynamics |
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| 3359. |
. क्या अल्फा कणों का प्रकीर्णन प्रयोग सोनेके अतिरिक्त दूसरी धातु की पन्नी से संभवहोगा? |
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Answer» अगर α- कण प्रकीर्णन प्रयोग किसी भी धातु की पन्नी का उपयोग करके किया जाता है, जैसा कि रदरफोर्ड द्वारा उपयोग की जाने वाली सोने की पन्नी के रूप में पतली है, तो टिप्पणियों में कोई बदलाव नहीं होगा। लेकिन चूंकि अन्य धातुएं इतनी निंदनीय नहीं हैं, इसलिए ऐसी पतली पन्नी प्राप्त करना मुश्किल है। यदि हम एक मोटी पन्नी का उपयोग करते हैं, तो अधिक α- कण प्रतिक्षेप करेंगे। |
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| 3360. |
0.01 M H2so4 is ionized to the extent of the 95% the pH of solution will be |
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Answer» Answer: 1.34 Explanation: 100=1 95=? 100/95 20/15 4/3 1.33 |
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| 3361. |
Name the types of reaction by thefollowing equationI NHq Nou > Na + 2 H₂02 Cao HH₂o - Ca COH)23 Cursou + 2 NOH - Call OH)2date t 302 + 2 xH 20 > 2. Fe 2 O XH2o5) NH₃ A - NH 3 THCL |
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Answer» Answer: ame the types of reaction by the following equation I NHq Nou > Na + 2 H₂0 3 Cursou + 2 NOH - Call OH)2 date t 302 + 2 XH 20 > 2. Fe 2 O XH2o 5) NH₃ A - NH 3 THCL |
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| 3362. |
How is oxygen prepared for kclo4 |
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Answer» Answer: Explanation: The thermal decomposition of POTASSIUM perchlorate is done to produce potassium chloride and OXYGEN the REACTION takes place near 610 degree Celsius. KCLO4= KCL +O2 |
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| 3363. |
What is the general electronic configuration of normal elements |
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Answer» Explanation: the GENERAL electronic CONFIGURATION of normal elements is NS,NP,nd,nf |
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| 3364. |
Why CO is Highly poisonous? |
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Answer» Answer: Carbon MONOXIDE is harmful when BREATHED because it displaces oxygen in the blood and deprives the heart, brain and other vital organs of oxygen. Large amounts of CO can overcome you in MINUTES without warning — causing you to LOSE CONSCIOUSNESS and suffocate. Explanation: |
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| 3365. |
What we called a element having valency 4 |
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Answer» we CALLED a ELEMENT having VALENCY 4 tetravalent ELEMENTS |
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| 3366. |
What is the state fire |
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Answer» Answer: FIRE is representative of a COMBUSTION reaction TAKING place in the gaseous state. Heat and light are just byproducts of combustion. In certain flames, a small amount of plasma might also FORMED by photo-ionization of NEARBY gaseous molecules. |
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| 3367. |
Which combinations will give stongest ionic bond |
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Answer» Answer: hey UR answer is.... due to more CHARGE Explanation: More Is the charge.. more is the STRENGTH of IONIC bond.. it's obey COULOMBIC force more charge more attraction |
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| 3368. |
Is there any nature of clove oil ,onion,dil vanilla |
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Answer» Answer: |
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| 3370. |
I 25. પોટેશિયમ કાર્બોનેટને ઉંચા તાપમાને ગરમ કરતાં .(1) CO વાયુ મળે. (2) O,વાયુ મળે.(3) CO વાયુ મળે .(4) એકપણ નહિ |
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Answer» (2) O madse Explanation: 2KMnO4----->K2MnO4+MnO2+O મને મગજની સૂચિ ચિહ્નિત કરો |
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| 3371. |
50.The ice caps of polar regions melt there by increasing the level of sea water ..cm [a) 90b) 80c) 70d) 60 |
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Answer» OPTION d .... |
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| 3372. |
The rate constant for a first orderreaction is 2.3 X 10^5+ If the initialconcentration of the reactant is 0.01M.What concentration will remain after 1hour? |
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Answer» HOPE the answer will help you MARK the answer brainliests please |
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| 3373. |
ZO. Abbreviation of TNT isa) Tri Nitric TitrateOxygen is used in the production of oxy hydrogen al .****n of oxy hydrogen at ......and oxy acetylene at ....flame. |
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Answer» OOOOOOOOOO oooooooooo |
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| 3374. |
Explain allotropes of carbon of graphite |
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Answer» Answer: GRAPHITE. Graphite is another allotrope of CARBON; unlike diamond, it is an ELECTRICAL conductor and a semi-metal. Graphite is the most stable form of carbon under standard CONDITIONS and is used in THERMOCHEMISTRY as the standard state for defining the heat of formation of carbon compounds. Explanation: |
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| 3375. |
H2s +(cr2o7) give to cr2o3 +s |
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Answer» HEY MATE your answer is the... H²s+cr²o7 + h±= CR3+ S+h²O |
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| 3376. |
Body breaks up into several fragments and each fragment starts to live as a new individual this is type of reproduction |
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Answer» SEXUAL REPRODUCTION i which NEW FAMILY |
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| 3377. |
Explain allotropes of carbon of Fullerenes |
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Answer» Answer: MARK as brainliest and follow me plz
EXPLANATION: Fullerenes are a class of carbon allotropes in which carbon TAKES the form of a hollow sphere, ellipsoid, or TUBE. This class of materials INCLUDES carbon nanotubes, buckyballs, and the newly discovered nanobuds. |
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| 3378. |
Electron dot structure of chlorobutene |
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Answer» Explanation: |
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| 3379. |
Why is mercury taken in barometer |
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Answer» Mercury is commonly used in BAROMETERS because its HIGH density means the height of the column can be a reasonable size to measure atmospheric pressure. A barometer using water, for instance, would need to be 13.6 times taller than a mercury barometer to OBTAIN the same pressure difference. hope it helps u buddy pls mark as brainlist ans plssss ... . |
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| 3380. |
How can the valency of an element be determined if the electronic configuration is known ? |
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Answer» Explanation: VALENCY → The combining capacity of the element. Any element NEEDS to complete its octet to ACHIEVE nearest noble gas configuration. For any element having electronic configuration where electron in the outermost shell is 1, 2, 3 or 4 then it's valency becomes (outermost electron) that is 1, 2, 3, or 4 respectively. For any element having electronic configuration where electron in the outermost shell is 5, 6 or 7 it's valency becomes [8-(outermost electron) ] that is 3,2,1 respectively. Valency of noble gases is zero |
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| 3381. |
Which has zero dipole moment ?(a) CIF(b) PCI,(c) SiF(d) CFCI, |
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Answer» CIF hope it HELPS |
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| 3383. |
Calculate the mass in gramof 1 molecule of nitrogen gas |
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Answer» NITROGEN gas is defined as N2. its molecular mass will become 28 . According to the mole concept in one mole there is 6.022×10^23 MOLES are present.so mass of one MOLECULE of nitrogen gas 28/6.022×10^23. solve it then u get answer. Mark as BRAINLIST ❤️ |
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| 3384. |
Accommodation of isotopic form of the same element was an upset in mendellev's periodic table.How could the modern periodic table remove the anomaly? |
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Answer» Answer: In MODERN PERIODIC table the elements are arranged on the basis of their atomic no. and not their MASS number. And we know that isotopes are the same elements with same atomic no. (number of electrons/protons) but have different mass no, i.e. their neutron are different. Therefore when they are arranged in according to their atomic number the isotopes get a similar position where the ATOM if the element is placed. And hence it was sorted out. Hope it helps you. |
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| 3385. |
Some people are listedin the following table distinguish between metals and nonmetals on the basis of these properties properties appearance hardness malleability ductility heat conduction conduction of electricity metals and nonmetals find |
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Answer» Answer: Metals::1 Metals are good conductors of heat. 2 Metala are good conductors of ELECTRICITY. 3 Metals have high tensile STRENGTH. 4 Metals are ductile. 5 Metals are sonorous. 6 Metals are MALLEABLE. HENCE these are some physical properties of METALS NON METALS::1 Non metals are generally lustreless. 2 They are bad conductors of heat . 3 they are bad conductors of electricity. 4 they are non sonorous 5 They are brittle. For more knowledgeToday 110 elements are known to us There are 24 non metals rest of them are metals.. Explanation: 24 nonmetals ::12 are solids1 is only liquid and that is bromine.11 are gases..May it help u .. |
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| 3386. |
Compare the size of element AL and CL and their electronegativity value |
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Answer» Answer: al will have bigger size than CL as size decreases from left to right and cl will be more electronegative than al as cl is NON metal and gains ELECTRONS while al is metal and LOSES electrons |
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| 3387. |
Differciat between Oxidising & reducing agent |
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Answer» Oxidizing and Reducing AGENTS. An oxidizing agent, or OXIDANT, GAINS electrons and is reduced in a chemical REACTION. ... A reducing agent is typically in one of its lower possible oxidation states, and is known as the electron donor. A reducing agent is oxidized, because it loses electrons in the redox reaction. |
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| 3388. |
What observation will you make when a mixture of sad and ammonium chloride is heated? |
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Answer» Answer: ammonium CHLORIDE will get DISAPPEAR DUE to sublimation process |
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| 3389. |
Mass percentage composition of methane ch4 |
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Answer» PERCENTAGE of METHANE is 18 |
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| 3390. |
Write the IUPAC name of isobutylalcohol |
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Answer» Answer: 2-methyl-propan-2-ol |
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| 3391. |
10. ठोस पदार्थ पर ऊष्मा का क्या प्रभाव पड़ता है? |
Answer» दिए गए विषय का स्पष्टीकरण नीचे दिए गए सेगमेंट में संक्षेप में दिया गया है।Explanation:
Learn more: |
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| 3392. |
A buffer solution made up of BOH and BCI of total molarity 0.29 M has pH = 9.6 and K. = 1.8 × 10^-5Concentration of salt and base respectively is:(A) 0.09 M and 0.2 M(B) 0.2 M and 0.09 M(C) 0.1 M and 0.19 M(D) 0.19 M and 0.1 M |
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Answer» Answer: A buffer SOLUTION made up of BOH and BCI of total MOLARITY 0.29 M has pH = 9.6 and K. = 1.8 × 10^-5 Concentration of SALT and base respectively is: (A) 0.09 M and 0.2 M (B) 0.2 M and 0.09 M✔(C) 0.1 M and 0.19 M (D) 0.19 M and 0.1 M |
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| 3393. |
How to draw 4 -Methylhept-2-yne |
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Answer» your ANSWER is in the GIVEN ATTACHMENT |
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| 3394. |
The length of British Columbia's coastline is 17856 km. if u laid 6.02 x 10^23 metre sticks end to end along the coast of BC, how many rows of metre sticks would you have? PLEASEE TELL FASTT |
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Answer» Answer: 3.37×10^16 Explanation: No. of rows=total LENGTH of the METRE sticks/distance= 6.02×10^20/17856=3.37×10^20 |
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| 3395. |
Explain the process of centrifugation. |
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Answer» Centrifugation is the process where a mixture is separated through spinning. It is used to separate SKIM MILK from whole milk, water from your CLOTHES, and blood CELLS from your blood plasma. please mark as BRAINLIEST please |
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| 3396. |
How many moles of calcium carbonate are in 63.8g of calcium carbonate |
Answer» 0.638 moles in 63.8g of CALCIUM carbonateExplanation: ACCORDING to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and CONTAINS avogadro's NUMBER To calculate the moles, we use the equation: given mass of calcium carbonate = 63.8 g Molar mass of calcium carbonate = 100 g/mol Thus there are 0.638 moles in 63.8g of calcium carbonate Learn More about mole concept https://brainly.com/question/2350620 https://brainly.com/question/11813126 |
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| 3397. |
What do you mean by displacement current write its expression |
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Answer» Answer: When a capacitor is charging (or discharging), current FLOWS in the circuit. However, there is no actual charge transfer in the insulated region between capacitor which is contradictory to the FLOW of current. Hence, displacement current is the current in the insulated region DUE to the changing electric FLUX... |
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| 3398. |
22. The value of observed molecular weight of silver nitrate is 132.5 gram/mole, in an aqueous solution. The degreeof dissociation of silver nitrate in this solution may be (1) 79% (2) 32% (3) 28% (4) 44% |
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Answer» Answer: 32percent PLS MARK me to BRAINLIEST |
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| 3399. |
9. How is Food and Agriculture Organization fighting against povertymalnutrition and hunger all over the world?OR |
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