46295 + Interview Questions in Chemistry

1.	Which of the following best describes the relationship between the second and third paragraphs of the passage?
Answer» Which of the following best describes the relationship between the second and third paragraphs of the passage?

Discussion

2.	Many years ago,earth has reducing atmosphere containing ch4 nh3 Here, reducing atmosphere means????
Answer» Many years ago,earth has reducing atmosphere containing ch4 nh3 Here, reducing atmosphere means????

2.

Many years ago,earth has reducing atmosphere containing ch4 nh3 Here, reducing atmosphere means????

Answer»

Many years ago,earth has reducing atmosphere containing ch4 nh3

Here, reducing atmosphere means????

Discussion

3.	The compound with the highest boiling point is
Answer» The compound with the highest boiling point is

Discussion

4.	Total number of α – hydrogens in the given compound is:
Answer» Total number of α – hydrogens in the given compound is:

Discussion

5.	Which of the following transition involves maximum amount of energy?
Answer» Which of the following transition involves maximum amount of energy?

Discussion

6.	A first order reaction is 50% completed in 1.26 × 10^14 s. How much time would it take for 100% completion?
Answer» A first order reaction is 50% completed in 1.26 × 10^14 s. How much time would it take for 100% completion?

Discussion

7.	A cube solid is made up of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body - centre. What is the formula of the compound ? What are the coordination numbers of P and Q ?
Answer» A cube solid is made up of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body - centre. What is the formula of the compound ? What are the coordination numbers of P and Q ?

Discussion

8.	Find the number of compounds that form basic flux from the ones given below: SiO2, MgO, CaO, FeO, B2O3, CaCO3
Answer» Find the number of compounds that form basic flux from the ones given below: $S i O_{2}, M g O, C a O, F e O, B_{2} O_{3}, C a C O_{3}$

Discussion

9.	Which of the following molecules is paramagnetic?
Answer» Which of the following molecules is paramagnetic?

Discussion

10.	A 100 watt bulb emits monochromatic light of wavelength 792 nm. Calculate the number of photons emitted per second by the bulb.
Answer» A $100 watt$ bulb emits monochromatic light of wavelength $792 nm$ . Calculate the number of photons emitted per second by the bulb.

Discussion

11.	Which of the following pairs of species (atoms/ions) will have identical ground state electronic configuration?
Answer» Which of the following pairs of species (atoms/ions) will have identical ground state electronic configuration?

Discussion

12.	CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOH The above set of reactions is named as
Answer» $C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$ The above set of reactions is named as

12.

CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOH The above set of reactions is named as

Answer»

$C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$
The above set of reactions is named as

Discussion

13.	Identify major product (S):
Answer» Identify major product (S):

Discussion

14.	A metal crystallizes into two cubic system-face centred cubic (fcc) and body centred cubic (bcc) whose unit cell lengths are 3.5 and 3.0Å respectively. Calculate the ratio of densities of fcc and bcc.
Answer» A metal crystallizes into two cubic system-face centred cubic (fcc) and body centred cubic (bcc) whose unit cell lengths are 3.5 and 3.0Å respectively. Calculate the ratio of densities of fcc and bcc.

Discussion

15.	The structure of the carbonyl compound P, which gives positive iodoform test undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S. The structure of the carbonyl compound P is:
Answer» The structure of the carbonyl compound P, which gives positive iodoform test undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S. The structure of the carbonyl compound P is:

15.

The structure of the carbonyl compound P, which gives positive iodoform test undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S. The structure of the carbonyl compound P is:

Answer»

The structure of the carbonyl compound P, which gives positive iodoform test undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S.

The structure of the carbonyl compound P is:

Discussion

16.	Sn when fused with NaOH will form. Sn + NaOH → _____ +H2
Answer» Sn when fused with $N a O H$ will form. $S n + N a O H \to$ _____ $+ H_{2}$

16.

Sn when fused with NaOH will form. Sn + NaOH → _____ +H2

Answer»

Sn when fused with $N a O H$ will form.

$S n + N a O H \to$ _____ $+ H_{2}$

Discussion

17.	Which of the following species act as an amphiprotic species in the following reactions? HCl(aq)+H2O(aq)⇌H3O+(aq)+Cl−(aq) NH3(aq)+H2O(aq)⇌NH+4(aq)+OH−(aq)
Answer» Which of the following species act as an amphiprotic species in the following reactions? $H C l (a q) + H_{2} O (a q) ⇌ H_{3} O^{+} (a q) + C l^{-} (a q)$ $N H_{3} (a q) + H_{2} O (a q) ⇌ N H_{4}^{+} (a q) + O H^{-} (a q)$

Discussion

18.	Choose the correct order of electron density for the following compounds :
Answer» Choose the correct order of electron density for the following compounds :

Discussion

19.	By what factor would the specific rate of a first order reaction increase, if the temperature is increased from 27 ∘C to 47 ∘C. The activation energy for the reaction is 55.776 kJmol−1. (Take ln2=0.7, R(gas const)=8.3 J/(mol.K)−1)
Answer» By what factor would the specific rate of a first order reaction increase, if the temperature is increased from $27^{\circ} C$ to $47^{\circ} C$ . The activation energy for the reaction is $55.776 k J m o l^{- 1}$ . (Take $l n 2 = 0.7, R (g a s c o n s t) = 8.3 J / (m o l . K)^{- 1})$

Discussion

20.	Van der waals constant "b" of helium is 24 mL mol−1. Find molecular diameter of helium.
Answer» Van der waals constant "b" of helium is $24 m L m o l^{- 1}$ . Find molecular diameter of helium.

Discussion

21.	The order of strength of hydrogen bond is:
Answer» The order of strength of hydrogen bond is:

Discussion

22.	A bulb emits light having λ=4500 ∘A. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?
Answer» A bulb emits light having $λ = 4500 \circ A$ . The bulb is rated as $150$ watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

Discussion

23.	Select the correct statement/s among the following? (a) Order of bond length : O2<O+2<O−22<O+22 (b) Number of dπ−pπ bonds in SO2 are 2 (c) XeF2, SO3, XeF4, SCl4, have non-zero dipole moment (d) Order of ionic nature LiCl>NaCl>KCl>RbCL>CsCl (e) AB2E2 has square planar geometry (f) Equal number of dative bonds in molecules are N2O, O3, SO2, B3N3H6, [Cu(NH3)4]SO4 (g) All electron deficient molecules of ‘B’ in B2H6 undergo sp2 hybridization (h) Central atom in a molecule has 6 bonded pairs and 0 lone pairs then geometry is distorted octahedral geometry ___
Answer» Select the correct statement/s among the following? (a) Order of bond length : $O_{2} < O_{2}^{+} < O_{2}^{- 2} < O_{2}^{+ 2}$ (b) Number of $d π - p π$ bonds in $S O_{2}$ are 2 (c) $X e F_{2}, S O_{3}, X e F_{4}, S C l_{4},$ have non-zero dipole moment (d) Order of ionic nature $L i C l > N a C l > K C l > R b C L > C s C l$ (e) $A B_{2} E_{2}$ has square planar geometry (f) Equal number of dative bonds in molecules are $N_{2} O, O_{3}, S O_{2}, B_{3} N_{3} H_{6}, [C u (N H_{3})_{4}] S O_{4}$ (g) All electron deficient molecules of ‘B’ in $B_{2} H_{6}$ undergo $s p_{2}$ hybridization (h) Central atom in a molecule has $6 b o n d e d p a i r s$ and $0 l o n e p a i r s$ then geometry is distorted octahedral geometry ___

Discussion

24.	What is the difference between half filled and partially filled orbital ?
Answer» What is the difference between half filled and partially filled orbital ?

Discussion

25.	Name the sweetening agent used in the preparation of sweets for a diabetic patient.
Answer» Name the sweetening agent used in the preparation of sweets for a diabetic patient.

Discussion

26.	Arsenous sulphide sol has negative charge. The maximum coagulating power for precipiatating it is of:
Answer» Arsenous sulphide sol has negative charge. The maximum coagulating power for precipiatating it is of:

Discussion

27.	Solubility product (KSP) of salts of types MX,MX2 and M3X at temperature T are 4×10−8,3.2×10−14 and 2.7×10−15 respectively, solubility of salts at temperature T are in order
Answer» Solubility product (KSP) of salts of types $M X, M X_{2}$ and $M_{3} X$ at temperature T are $4 \times 10^{- 8}, 3.2 \times 10^{- 14}$ and $2.7 \times 10^{- 15}$ respectively, solubility of salts at temperature T are in order

Discussion

28.	If depression in freezing point is maximum then how freezing point is mimium
Answer» If depression in freezing point is maximum then how freezing point is mimium

Discussion

29.	If α is the degree of ionization, C the concentration of a weak electrolyte and Ka the acid ionization constant, then the correct relationship between α,$C$ and Ka is
Answer» If $α$ is the degree of ionization, $C$ the concentration of a weak electrolyte and $K_{a}$ the acid ionization constant, then the correct relationship between $α$ ,$C$ and $K_{a}$ is

Discussion

30.	What current strength would be required to produce hydrogen gas at the rate of 1.12 cm3s−1(STP) by the electrolysis of aqueous NaCl solution with 96.5% current efficiency ?
Answer» What current strength would be required to produce hydrogen gas at the rate of $1.12 c m^{3} s^{- 1}$ (STP) by the electrolysis of aqueous NaCl solution with 96.5% current efficiency ?

Discussion

31.	Product formed in the following reaction is
Answer» Product formed in the following reaction is

Discussion

32.	Which of the following solids is not an electrical conductor? 1. Mg(s) 2.TiO(s) 3.I2 (s) 4. H2O (s) (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 2,3 and 4
Answer» Which of the following solids is not an electrical conductor? 1. Mg(s) 2.TiO(s) 3. $I_{2}$ (s) 4. $H_{2} O$ (s) (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 2,3 and 4

32.

Which of the following solids is not an electrical conductor? 1. Mg(s) 2.TiO(s) 3.I2 (s) 4. H2O (s) (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 2,3 and 4

Answer»

Which of the following solids is not an electrical conductor?

1. Mg(s) 2.TiO(s) 3. $I_{2}$ (s) 4. $H_{2} O$ (s)

(a) Only 1 (b) Only 2 (c) 3 and 4 (d) 2,3 and 4

Discussion

33.	What is the common name of the given compound?
Answer» What is the common name of the given compound?

Discussion

34.	Hydrogen can be obtained from water by
Answer» Hydrogen can be obtained from water by

Discussion

35.	Equal volumes of 20vol H2O2, 25vol H2O2 and 50vol H2O2 are mixed. The normality of the resultant solution is
Answer» Equal volumes of 20vol $H_{2} O_{2}$ , 25vol $H_{2} O_{2}$ and 50vol $H_{2} O_{2}$ are mixed. The normality of the resultant solution is

Discussion

36.	Cyclohexane, a hydrocarbon, floats on water because
Answer» Cyclohexane, a hydrocarbon, floats on water because

Discussion

37.	If 2 millimoles of hydrated copper sulphate salt (CuSO4.5H2O) is heated to dryness, then calculate the obtained mass of anhydrous copper sulphate salt. (Given: molar mass of Cu=63.5 g/mol)
Answer» If $2$ millimoles of hydrated copper sulphate salt $(C u S O_{4} .5 H_{2} O)$ is heated to dryness, then calculate the obtained mass of anhydrous copper sulphate salt. (Given: molar mass of $C u = 63.5 g/mol$ )

Discussion

38.	(a) How many sub-shells are associated with n = 4? (b) How many electrons will be present in the sub-shells having ms value of –1/2 for n = 4?
Answer» (a) How many sub-shells are associated with n = 4? (b) How many electrons will be present in the sub-shells having ms value of –1/2 for n = 4?

Discussion

39.	I did not understand the partial equation method. How do we divide the equation into 2 smaller equations?
Answer» I did not understand the partial equation method. How do we divide the equation into 2 smaller equations?

Discussion

40.	Which of the following is not an antibiotic?
Answer» Which of the following is not an antibiotic?

Discussion

41.	The molal elevation constant is the ratio of the elevation in B.P. to
Answer» The molal elevation constant is the ratio of the elevation in B.P. to

Discussion

42.	Mark the incorrect statement. Halogens are coloured because
Answer» Mark the incorrect statement. Halogens are coloured because

42.

Mark the incorrect statement. Halogens are coloured because

Answer»

Mark the incorrect statement.

Halogens are coloured because

Discussion

43.	The values of osmotic potential (\pi\) and pressure potential (p) of cells A, B, C and D are given below. CellπpA−1.00.5B−0.60.3C−1.20.6D−0.80.4 Identify the sequence that shows the path of movement of water from the following.
Answer» The values of osmotic potential (\pi\) and pressure potential (p) of cells A, B, C and D are given below. $\begin{matrix} Cell & π & p A & - 1.0 & 0.5 B & - 0.6 & 0.3 C & - 1.2 & 0.6 D & - 0.8 & 0.4 \end{matrix}$ Identify the sequence that shows the path of movement of water from the following.

Discussion

44.	Heat of reaction for C6H12O6(s) + 6O2 → 6CO2(g) + 6H2O(v) at constant pressure is −651 K cal at 17∘ C. What is the heat of reaction at constant volume at 17∘ C?
Answer» Heat of reaction for $C_{6} H_{12} O_{6} (s) + 6 O_{2} \to 6 C O_{2} (g) + 6 H_{2} O (v)$ at constant pressure is $- 651 K c a l$ at $17^{\circ} C$ . What is the heat of reaction at constant volume at $17^{\circ} C$ ?

Discussion

45.	When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings
Answer» When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings

Discussion

46.	Producer Gas is a mixture of
Answer» Producer Gas is a mixture of

Discussion

47.	The 6th period of the periodic table contains
Answer» The $6^{t h}$ period of the periodic table contains

Discussion

48.	Each carbon in carbon suboxide is
Answer» Each carbon in carbon suboxide is

Discussion

49.	Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?
Answer» Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?

Discussion

50.	The number of waves in the fourth Bohr orbit of hydrogen is
Answer» The number of waves in the fourth Bohr orbit of hydrogen is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following best describes the relationship between the second and third paragraphs of the passage?

Many years ago,earth has reducing atmosphere containing ch4 nh3 Here, reducing atmosphere means????

The compound with the highest boiling point is

Total number of α – hydrogens in the given compound is:

Which of the following transition involves maximum amount of energy?

A first order reaction is 50% completed in 1.26 × 10^14 s. How much time would it take for 100% completion?

A cube solid is made up of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body - centre. What is the formula of the compound ? What are the coordination numbers of P and Q ?

Find the number of compounds that form basic flux from the ones given below: SiO2, MgO, CaO, FeO, B2O3, CaCO3

Which of the following molecules is paramagnetic?

A 100 watt bulb emits monochromatic light of wavelength 792 nm. Calculate the number of photons emitted per second by the bulb.

Which of the following pairs of species (atoms/ions) will have identical ground state electronic configuration?

CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOH The above set of reactions is named as

Identify major product (S):

A metal crystallizes into two cubic system-face centred cubic (fcc) and body centred cubic (bcc) whose unit cell lengths are 3.5 and 3.0Å respectively. Calculate the ratio of densities of fcc and bcc.

Sn when fused with NaOH will form. Sn + NaOH → _____ +H2

Which of the following species act as an amphiprotic species in the following reactions? HCl(aq)+H2O(aq)⇌H3O+(aq)+Cl−(aq) NH3(aq)+H2O(aq)⇌NH+4(aq)+OH−(aq)

Choose the correct order of electron density for the following compounds :

By what factor would the specific rate of a first order reaction increase, if the temperature is increased from 27 ∘C to 47 ∘C. The activation energy for the reaction is 55.776 kJmol−1. (Take ln2=0.7, R(gas const)=8.3 J/(mol.K)−1)

Van der waals constant "b" of helium is 24 mL mol−1. Find molecular diameter of helium.

The order of strength of hydrogen bond is:

A bulb emits light having λ=4500 ∘A. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

What is the difference between half filled and partially filled orbital ?

Name the sweetening agent used in the preparation of sweets for a diabetic patient.

Arsenous sulphide sol has negative charge. The maximum coagulating power for precipiatating it is of:

Solubility product (KSP) of salts of types MX,MX2 and M3X at temperature T are 4×10−8,3.2×10−14 and 2.7×10−15 respectively, solubility of salts at temperature T are in order

If depression in freezing point is maximum then how freezing point is mimium

If α is the degree of ionization, C the concentration of a weak electrolyte and Ka the acid ionization constant, then the correct relationship between α,\(C\) and Ka is

What current strength would be required to produce hydrogen gas at the rate of 1.12 cm3s−1(STP) by the electrolysis of aqueous NaCl solution with 96.5% current efficiency ?

Product formed in the following reaction is

Which of the following solids is not an electrical conductor? 1. Mg(s) 2.TiO(s) 3.I2 (s) 4. H2O (s) (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 2,3 and 4

What is the common name of the given compound?

Hydrogen can be obtained from water by

Equal volumes of 20vol H2O2, 25vol H2O2 and 50vol H2O2 are mixed. The normality of the resultant solution is

Cyclohexane, a hydrocarbon, floats on water because

If 2 millimoles of hydrated copper sulphate salt (CuSO4.5H2O) is heated to dryness, then calculate the obtained mass of anhydrous copper sulphate salt. (Given: molar mass of Cu=63.5 g/mol)

(a) How many sub-shells are associated with n = 4? (b) How many electrons will be present in the sub-shells having ms value of –1/2 for n = 4?

I did not understand the partial equation method. How do we divide the equation into 2 smaller equations?

Which of the following is not an antibiotic?

The molal elevation constant is the ratio of the elevation in B.P. to

Mark the incorrect statement. Halogens are coloured because

The values of osmotic potential (\pi\) and pressure potential (p) of cells A, B, C and D are given below. CellπpA−1.00.5B−0.60.3C−1.20.6D−0.80.4 ​​​​​​​ Identify the sequence that shows the path of movement of water from the following.

Heat of reaction for C6H12O6(s) + 6O2 → 6CO2(g) + 6H2O(v) at constant pressure is −651 K cal at 17∘ C. What is the heat of reaction at constant volume at 17∘ C?

When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings

Producer Gas is a mixture of

The 6th period of the periodic table contains

Each carbon in carbon suboxide is

Which of the following will have the highest priority if we are considering E and Z nomenclature of geometrical isomers?

The number of waves in the fourth Bohr orbit of hydrogen is

The values of osmotic potential (\pi\) and pressure potential (p) of cells A, B, C and D are given below. CellπpA−1.00.5B−0.60.3C−1.20.6D−0.80.4 Identify the sequence that shows the path of movement of water from the following.