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.
| 29601. |
The isoelectronic pair is |
|
Answer» `Cl_(2) O, ICl_(2)^(-)` |
|
| 29602. |
The isoelectric-points of a colloidally dispersed material is the pH value at which |
|
Answer» the dispersed PHASE MIGRATE in an electric field |
|
| 29603. |
The isoelectric (or isoionic) point is the pH where the amino acid is |
|
Answer» POSITIVELY CHARGED. |
|
| 29604. |
The incrorrect expression amoung the following is |
|
Answer» `(DeltaG" SYSTEM")/(DeltaS" total")=-T` `-RTInK=DeltaH^(@)-TDeltaS^(@)` `InK=(-DeltaH^(@)-TDeltaS^(@))/(RT)` |
|
| 29605. |
The isoelectric point of a protein is : |
|
Answer» the PHAT which the protein in molecule has no CHARGES on its surface |
|
| 29606. |
The isobars are atoms with the same number of |
|
Answer» Protons |
|
| 29607. |
The indicated atom is not a nuclcophilic site in |
|
Answer» `underset(UARR )(BH_(4)^(-))` |
|
| 29608. |
The ______ is successful in explaining the formation, structures, colour and magnetic properties of coordination compounds. |
|
Answer» |
|
| 29609. |
The islent killer carbon monoxide can be estimated with |
| Answer» Answer :B | |
| 29610. |
The iron salt used in blue prints is : |
|
Answer» `FeC_(2)O_(4)` `Cr_(2)O_(7)^(2-)+2OH^(-)+2CrO_(7)^(2-)+H_(2)O` |
|
| 29611. |
The iron obtained from the blast furnace is called: |
|
Answer» PIG iron |
|
| 29612. |
The increasing order of volatitility of hydrides of group 16 element is |
|
Answer» `H_(2)S LT H_(2)O lt H_(2)SE lt H_(2)Te` |
|
| 29613. |
The increasing order of + I effect shown by H, CH_3, C_2H_5 and C_3H_7 is: |
|
Answer» `HgtCH_3ltC_2H_5ltC_3H_7` |
|
| 29615. |
The iron catalyst used in the synthesis of ammonia in Haber's process is poisoned by |
|
Answer» `As_2O_3` |
|
| 29616. |
The increasing order of the reactivity of the following halides for the Sn^(1) reaction is underset((I))(underset(Cl)underset(|)(CH_(3)CH)CH_(2)CH_(3))""underset((II)(CH_(3)CH_(2)CH_(2)Cl)""underset((III)(pH_(3)CO-C_(6)H_(4)-CH_(2)Cl) |
|
Answer» `(II) lt (I) lt (III)` [Stability ORDER of carbocation] |
|
| 29618. |
The increasing order of the reactivity of the following halides for the S_(N)1 reaction is …… underset((I))(CH_(3)underset("Cl ")underset("| ")("C ")HCH_(2)CH_(3)) "" underset((II))(CH_(3)CH_(2)CH_(2)Cl) "" underset((III))(p-H_(3)CO-C_(6)H_(4)-CH_(2)Cl) |
|
Answer» `(iii)lt(ii)lt(i)`
|
|
| 29619. |
The IR stretchin frequencies of free CO, and CO [V(CO)_(6)]^(-),[Cr(CO)_(6)]^(-) and [Mn(CO)_(6)]^(-) are 2143cm^(-1),1860cm^-1),2000cm^(-1) and 2090cm^(-1), respectively. Then correct statemet about metal carbonyl is: |
|
Answer» C-O' bond is STRONGEST in the cation and WEAKEST in the anion. Higher the negative oxidation state of CENTRAL metal: `prop `Bond LENGTH of C-O `:prop(1)/("Bond order of CO")` : Bond order of M-C bond. |
|
| 29620. |
The increasing order of the strength of hydrogen bond in the following mentioned linkages is : (i)O-H-S(ii)S-H-O (iii)F-H-F(iv)F-H-O |
|
Answer» (i)lt(ii)lt(iv)lt(iii) (i)ELECTRONEGATIVITY of ELEMENT covalently bonded to hydrogen atom (ii)Size of ELECTRONEGATIVE element. (iii)Ease of donation of lone pair of electrons by electronegative element. |
|
| 29621. |
The IP of H is 13.6 eV. It is exposed to electromagnetic waves of 1028Å and given out induced radiatiions. Find the wavelength of these induced radiations. |
|
Answer» |
|
| 29622. |
The ions that can be precipitated by both HCl and H_(2)S are |
|
Answer» `PB^(+2)` |
|
| 29623. |
The increasing order of the reactivity of the following halides for the S_(N^(1)) reaction is: underset(I)(CH_(3)underset(Cl)underset(|)(C)HCH_(2)CH_(3))" "underset(II)(CH_(3)CH_(2)CH_(2)Cl)" "underset(III)(p-H_(3)COC_(6)H_(4)CH_(2)Cl). |
|
Answer» `(I)lt(III)lt(II)` . The CORRECT order `(II) lt (I)lt (III)`. |
|
| 29624. |
The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^(-), small molecules such as H_(2)O or NH_(3), larger molecules such as H_(2)NCH_(2)CH_(2)NH_(2) or N(CH_(2)CH_(2)NH_(2))_(3) or even macromolecules, such as proteins. When a ligand is bound to a metal ion through a single donor atom, as with Cl^(-), H_(2)O or NH_(3), the ligand is said to be unidentate. When a ligand can bind through two donor atoms as in H_(2)NCH_(2)CH_(2)NH_(2) (ethane-1, 2-diamine) or C_(2)O_(4)^(2-) (oxalate), the ligand is said to be didentate and when several donor atoms are present in single ligand as in N(CH_(2)CH_(2)NH_(2))_(3), the ligand is said to be polydentate Ethylenediamineteraacetate ion [EDTA^(4-)] is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion. How many nitrogen atoms and oxygen atoms in ethylenediaminetetraacetate are bonded to the metal in the complex compounds ? |
| Answer» SOLUTION :TWO NITROGEN atoms and FOUR oxygen atoms in ethylenediaminetetraacetate ligand are BOUND to the central atom. | |
| 29625. |
The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^(-), small molecules such as H_(2)O or NH_(3), larger molecules such as H_(2)NCH_(2)CH_(2)NH_(2) or N(CH_(2)CH_(2)NH_(2))_(3) or even macromolecules, such as proteins. When a ligand is bound to a metal ion through a single donor atom, as with Cl^(-), H_(2)O or NH_(3), the ligand is said to be unidentate. When a ligand can bind through two donor atoms as in H_(2)NCH_(2)CH_(2)NH_(2) (ethane-1, 2-diamine) or C_(2)O_(4)^(2-) (oxalate), the ligand is said to be didentate and when several donor atoms are present in single ligand as in N(CH_(2)CH_(2)NH_(2))_(3), the ligand is said to be polydentate Ethylenediamineteraacetate ion [EDTA^(4-)] is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion. What type of ligands are H_(2)O and NH_(3) ? |
| Answer» Solution :`H_(2)O` and `NH_(3)` are unidentate LIGANDS. | |
| 29626. |
The increasing order of the reactivity of the following halides for the S_(N)^(1) reaction is : CH_(3)underset(CI)(CHCH_(2) CH_(3)) CH_(3) CH_(2) CH_(2)Cl p-H_(3)CO–C_(6)H–CH_(2)CI |
|
Answer» `(II) LT (I) lt (III)`
|
|
| 29627. |
The ion(s) that act/s as oxidizing agent in solution is/are |
|
Answer» `TL^(+)` and `Al^(3+)` `underset("(LESS stable oxidising agent)")(Tl^(3)" Compounds ")+2e^(-) RARR Tl^(+)underset(("(More stable"),("reducing agent)"))("Compounds")` |
|
| 29628. |
The increasing order of the reactivity of the following halides for the S_(N)1 reaction is - CH_(3)underset((I))underset(Cl)underset(|)CHCH_(2)CH_(3)CH_(3)CH_(2)underset(II)CH_(2)Cl p-H_(3)CO-C_(6)H_(4)-CH_(2)Cl (III) |
|
Answer» `(II) LT (I) lt (III)` |
|
| 29629. |
The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^(-), small molecules such as H_(2)O or NH_(3), larger molecules such as H_(2)NCH_(2)CH_(2)NH_(2) or N(CH_(2)CH_(2)NH_(2))_(3) or even macromolecules, such as proteins. When a ligand is bound to a metal ion through a single donor atom, as with Cl^(-), H_(2)O or NH_(3), the ligand is said to be unidentate. When a ligand can bind through two donor atoms as in H_(2)NCH_(2)CH_(2)NH_(2) (ethane-1, 2-diamine) or C_(2)O_(4)^(2-) (oxalate), the ligand is said to be didentate and when several donor atoms are present in single ligand as in N(CH_(2)CH_(2)NH_(2))_(3), the ligand is said to be polydentate Ethylenediamineteraacetate ion [EDTA^(4-)] is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion. What is meant by didentate ligand ? Give an example other than ethane-1,2-diamine. |
| Answer» Solution :A LIGAND that binds to the central metal at TWO PLACES is CALLED didentate ligand. | |
| 29630. |
The increasing order of the rate of HCN addition to compounds, A-D is A. HCHO B. CH_(3)COCH_(3) C. PhCOCH_(3) D. PhCOPh |
|
Answer» `A LT B lt C lt D` |
|
| 29631. |
The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^(-), small molecules such as H_(2)O or NH_(3), larger molecules such as H_(2)NCH_(2)CH_(2)NH_(2) or N(CH_(2)CH_(2)NH_(2))_(3) or even macromolecules, such as proteins. When a ligand is bound to a metal ion through a single donor atom, as with Cl^(-), H_(2)O or NH_(3), the ligand is said to be unidentate. When a ligand can bind through two donor atoms as in H_(2)NCH_(2)CH_(2)NH_(2) (ethane-1, 2-diamine) or C_(2)O_(4)^(2-) (oxalate), the ligand is said to be didentate and when several donor atoms are present in single ligand as in N(CH_(2)CH_(2)NH_(2))_(3), the ligand is said to be polydentate Ethylenediamineteraacetate ion [EDTA^(4-)] is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion. Write the formula of ethylenediamine. |
| Answer» SOLUTION :`H_(2)NCH_(2)CH_(2)NH_(2)` is the formula of ETHYLENEDIAMINE. | |
| 29632. |
The ions or molecules bound to the central atom/ion in the coordination entity are called ligands. These may be simple ions such as Cl^(-), small molecules such as H_(2)O or NH_(3), larger molecules such as H_(2)NCH_(2)CH_(2)NH_(2) or N(CH_(2)CH_(2)NH_(2))_(3) or even macromolecules, such as proteins. When a ligand is bound to a metal ion through a single donor atom, as with Cl^(-), H_(2)O or NH_(3), the ligand is said to be unidentate. When a ligand can bind through two donor atoms as in H_(2)NCH_(2)CH_(2)NH_(2) (ethane-1, 2-diamine) or C_(2)O_(4)^(2-) (oxalate), the ligand is said to be didentate and when several donor atoms are present in single ligand as in N(CH_(2)CH_(2)NH_(2)_(3), the ligand is said to be polydentate Ethylenediamineteraacetate ion [EDTA^(4-)] is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion. What is meant by the term ligand ? |
| Answer» Solution :The IONS or molecules bound to the CENTRAL atom/ion in the coordination COMPOUNDS are CALLED ligands. | |
| 29633. |
The ions O^(2-) , Na^+ , F^- , Mg^(2+) and Al^(3+)are isoelectronic,Their ionic radii show |
|
Answer» a significant decrease from `O^(2-) to Al^(3+)` |
|
| 29634. |
The increasing order of the rate of HCN addition to compound A-D is (A)HCHO , (B)CH_3COCH_3 , (C ) PhCOCH_3 , (D)PhCOPh |
|
Answer» D lt Clt Blt A The lower reactivity of ketones is due to presence of two ALKYL group which shows +I effect. The reactivity of ketones decreases as the size of alkyl group increases. |
|
| 29635. |
The ions having 4f ^(0), 5d^(0)6s^(0) stable electronic configuration are |
|
Answer» `LA ^(3+) and CE ^(4+)` |
|
| 29636. |
The increasing order of the pK_(b)of the following compound is: |
|
Answer» `(B) lt (D) lt (A) lt (C)` |
|
| 29637. |
The ions O^(2-), F^(-),Na^(+),Mg^(2+)and Al^(3+) are isoelectric. Their radii show |
|
Answer» an increase from `O^(2-)` to `F^(-)` and then decrease from `Na^(+)` to `Al^(3+)` |
|
| 29638. |
The increasing order of the ionic radii of the given isoelectronic species is |
|
Answer» `K^(+),S^(2-),Ca^(2+),Cl^(-)` `Ca^(2+)ltK^(+)LTCL^(-)LTS^(2-)` With increase in nuclear CHARGE. SIZE decrease in isoelecronic species. `Ca^(2+)(+20)ltK^(+)(+19)ltCl^(-)(+17)ltS^(2-)(+16)` |
|
| 29639. |
The ions discharged at anode by the electrolysis of very dilute H_2SO_4solution are: |
|
Answer» `H_3O^+` |
|
| 29640. |
The increasing order of the crystal field splitting power of some common ligands is |
|
Answer» `H_(2)OltOH^(-)ltCl^(-)LTF^(-)ltCN^(-)` |
|
| 29641. |
The increasing order of the density of alkali metals |
|
Answer» `LiltKltNaltRbltCs` |
|
| 29642. |
The ionization potential of hydrogen atom is 13.6 eV. The energy required to remove an electron from the n=2 state of hydrogen atom is: |
|
Answer» 27.2 eV |
|
| 29643. |
The ionization potential for the electron in the ground state of hydrogen atom is 13.6eV. what would be the ionization potential for the electron in the first excited state of Li^(2+)? |
|
Answer» `54.4`EV |
|
| 29644. |
The increasing order of the crystal field splitting power of some common ligands is : |
|
Answer» `H_(2)O lt OH^(-) lt Cl^(-) lt F^(-) lt CN^(-)` |
|
| 29645. |
The ionization of hydrogen atom would give rise to : |
|
Answer» HYDRIDE ion |
|
| 29646. |
The ionization of hydrogen atom would give rise to |
|
Answer» HYDROXYL ION |
|
| 29647. |
The increasing order of the boiling points for the partition compounds is :underset((I))(C_(2)H_(5)OH)"" underset((II))(C_(2)H_(5)Cl) ""underset((III))(C_(2)H_(5)CH_(3))"" underset ((IV))(C_(2)H_(5)OCH_(3)) |
|
Answer» `(III)LT(IV)lt(II)lt(I)` (II)`C_(2)H_(5)CL`Dipole - Dipole `C_(2)H_(5)Cl` is more polar than`C_(2)H_(5)OCH_(3)` so , Dipole - Dipole `C_(2)H_(5)Clgt` Dipole - Dipole `C_(2)H_(5)OCH_(3)` (III)`C_(2)H_(5)CH_(3)`No hydrogen bonding and dipole - dipole interaction (IV) `C_(2)H_(5)OCH_(3)`Dipole - Dipole Boiling POINTS order is - `(II)lt(IV)lt(II)lt(I)`. |
|
| 29648. |
The ionization of H_(2)SO_(4) is completed in 2 steps .(i)H_(2)SO_(4)toH^(+)+HSO_(4)^(-1) k_(a)(1)=1.4xx10^(-2) mol L^(-1) s^(-1) (ii)HSO_(4)^(-)=3.5xx10^(-2) mol L^(-1)S^(-1) Then which of the following equation given below is true for rate? |
|
Answer» Rate=`K_(a)(1)[H_(2)SO_(4)]` (ii)`HSO_(4)^(-1)TOH^(+)+SO_(4)^(2-)`Ka (2) `3.5xx10^(-2)` `therefore` Rate will be =`K_(a)(2)HSO_(4)^(-1)` So,option (B) is correct. |
|
| 29649. |
The ionization isomer of [Cr(H_2O)_4Cl(NO_2)]Clis |
|
Answer» `[Cr(H_2O)_4(NO_2)]Cl_2` |
|
| 29650. |
The increasing order of reactivity of the following halides for the S_(N)^(1) reaction is (i) CH_(3) - CH - underset(CI)underset(|)CH_(3)(ii) CH_(3) - CH_(2) - CH_(2) - CI (iii) P - H_(3) CO - C_(6)H_(4) - CH_(4) - CI |
|
Answer» iii lt ii lt i |
|