46295 + Interview Questions in Chemistry

1.	how many covalent bonds are there in PROPENE
Answer» how many covalent bonds are there in PROPENE

Discussion

2.	Le-chatlier's principle is about equilibrium constant
Answer» Le-chatlier's principle is about equilibrium constant

Discussion

3.	in which of the following reaction boron does not as reducing agent ? (1) B+CO2--> (2) B+ Mg--> (3) B+ SiO2 --> (4) B+ HNO3--
Answer» in which of the following reaction boron does not as reducing agent ? (1) B+CO2--> (2) B+ Mg--> (3) B+ SiO2 --> (4) B+ HNO3--

Discussion

4.	In the case of alkali metals, the ionic character decreases in the order:
Answer» In the case of alkali metals, the ionic character decreases in the order:

Discussion

5.	An ideal gas expands according to the law p power(2).V equals constant The internal energy of the gas (p is pressure ,V is volume) a ) increase continuously b ) decrease " c) remain constant d ) first increases and then decreases.
Answer» An ideal gas expands according to the law p power(2).V equals constant The internal energy of the gas (p is pressure ,V is volume) a ) increase continuously b ) decrease " c) remain constant d ) first increases and then decreases.

Discussion

6.	Explain preparation of alkyne with mechanism?
Answer» Explain preparation of alkyne with mechanism?

Discussion

7.	Which of the following reactions can produce benzaldehyde as a product?
Answer» Which of the following reactions can produce benzaldehyde as a product?

Discussion

8.	The correct order of Lewis acid of the following-PI3, PBr3, PCl3 and PF3
Answer» The correct order of Lewis acid of the following- PI3, PBr3, PCl3 and PF3

Discussion

9.	The correct structure of tribromooctaoxide i
Answer» The correct structure of tribromooctaoxide i

Discussion

10.	A solid AB has NaCl type structure. If radius of cation A+ is 200 pm then maximum possible radius of the anion B– is
Answer» A solid AB has NaCl type structure. If radius of cation A+ is 200 pm then maximum possible radius of the anion B– is

Discussion

11.	If equal quantities of electricity three voltameter containing FeSo, Fe (SO4)3 and Fe(NO3)3, then which of the following is not true? (1) Amount of iron deposited in Feso4 and are passed throug . Fe (SO4)3 is equal 2 (2) Amount of iron deposited in Fe(NO3)3 is of (3) Amount of iron deposited in Fe2(SO4)3 and (4) Same gas will evolve in all three cases at the amount of iron deposited in FeSO Fe(NO2), are equal anode
Answer» If equal quantities of electricity three voltameter containing FeSo, Fe (SO4)3 and Fe(NO3)3, then which of the following is not true? (1) Amount of iron deposited in Feso4 and are passed throug . Fe (SO4)3 is equal 2 (2) Amount of iron deposited in Fe(NO3)3 is of (3) Amount of iron deposited in Fe2(SO4)3 and (4) Same gas will evolve in all three cases at the amount of iron deposited in FeSO Fe(NO2), are equal anode

Discussion

12.	In BCC type of lattice why Z(effective number of atoms )is taken to be 1as for BCC it should be 2 ?
Answer» In BCC type of lattice why Z(effective number of atoms )is taken to be 1as for BCC it should be 2 ?

Discussion

13.	For gases CH4(g) and N2(g) Both gases are in the same sealed flask with a total pressure of 750 mmHg. The partial pressure of N2(g) is 500 mmHg. Which is / are incorrect graph.
Answer» For gases $C H_{4} (g)$ and $N_{2} (g)$ Both gases are in the same sealed flask with a total pressure of 750 mmHg. The partial pressure of $N_{2} (g)$ is 500 mmHg. Which is / are incorrect graph.

Discussion

14.	WHAT IS ELECTRON CONFIGURATION AND HOW TO FIND IT ?
Answer» WHAT IS ELECTRON CONFIGURATION AND HOW TO FIND IT ?

Discussion

15.	vinylic halide are unreactive towards nucleophilic substitution rxn because of the following except: 1 C-ha\log en bond is strong 2 the ha\log en is bonded to sp2 hybridised carbon 3 a double bond character is developed in carbon ha\log en bond 4 halide ions are not good leaving grps
Answer» vinylic halide are unreactive towards nucleophilic substitution rxn because of the following except: 1 C-ha\log en bond is strong 2 the ha\log en is bonded to sp2 hybridised carbon 3 a double bond character is developed in carbon ha\log en bond 4 halide ions are not good leaving grps

Discussion

16.	38. What are the condition for the formation of BHC and HBC when benzene is halogenated with chlorine?
Answer» 38. What are the condition for the formation of BHC and HBC when benzene is halogenated with chlorine?

Discussion

17.	A tyre pumped to a pressure of 4 atmosphere and 47 degree celcius suddendly bursts what is the the final temperature gamma is 1.5
Answer» A tyre pumped to a pressure of 4 atmosphere and 47 degree celcius suddendly bursts what is the the final temperature gamma is 1.5

Discussion

18.	What are metal carbonyls.
Answer» What are metal carbonyls.

Discussion

19.	50.The empirical formula of none electrolyte is CH2O. A solution containing 3g of compound exerts the same osmotic pressure as that of 0.05M glucose solution. the molecular formula if the compound is A)CH2O B)C2H4O2 C)C4H8O4 D)C3H6O3
Answer» 50.The empirical formula of none electrolyte is CH2O. A solution containing 3g of compound exerts the same osmotic pressure as that of 0.05M glucose solution. the molecular formula if the compound is A)CH2O B)C2H4O2 C)C4H8O4 D)C3H6O3

Discussion

20.	What is the order of the oxidizing power of perhalates?
Answer» What is the order of the oxidizing power of perhalates?

Discussion

21.	0.02 M solution of H2A has pH=4. If Ka1 for the acid is 5×10−7 M, the concentration of HA− ion in the solution would be :
Answer» $0.02 M$ solution of $H_{2} A$ has $p H = 4$ . If $K_{a_{1}}$ for the acid is $5 \times 10^{- 7} M$ , the concentration of $H A^{-}$ ion in the solution would be :

Discussion

22.	Oxymercuration-demercuration of 3, 3-dimethyl but-1-ene gives which alcohol?
Answer» Oxymercuration-demercuration of 3, 3-dimethyl but-1-ene gives which alcohol?

Discussion

23.	what is geometric isomerism and preparation?
Answer» what is geometric isomerism and preparation?

Discussion

24.	Which of the following molecule(s) has/have highest number of the features given below? 1. Have three traslational degrees of freedom. 2. Have two rotational degrees of freedom. 3. Triatomic and non linear 4. Triatomic and linear
Answer» Which of the following molecule(s) has/have highest number of the features given below? 1. Have three traslational degrees of freedom. 2. Have two rotational degrees of freedom. 3. Triatomic and non linear 4. Triatomic and linear

Discussion

25.	How this equation will be balanced? Mg(co3)2 + Hcl -----> MgCl + H2o +CO2
Answer» How this equation will be balanced? Mg(co3)2 + Hcl -----> MgCl + H2o +CO2

Discussion

26.	why hyperconjugation effect does not occur in tripple bond atom (carbon
Answer» why hyperconjugation effect does not occur in tripple bond atom (carbon

Discussion

27.	The correct order of atomic radii among the following elements is:
Answer» The correct order of atomic radii among the following elements is:

Discussion

28.	If f : A ➡ B and g : B ➡ C are one-one functions, show that gof is a one-one function.
Answer» If f : A ➡ B and g : B ➡ C are one-one functions, show that gof is a one-one function.

Discussion

29.	Which of the following(s) is/are optically inactive?
Answer» Which of the following(s) is/are optically inactive?

Discussion

30.	46.The freezing point of equal molal aqueous solution will be highest for 1)C6H5NH3Cl 2)Ca(NO3)2 3)La(NO3)3 4)C6H12O6
Answer» 46.The freezing point of equal molal aqueous solution will be highest for 1)C6H5NH3Cl 2)Ca(NO3)2 3)La(NO3)3 4)C6H12O6

Discussion

31.	Based on the following, which comparison(s) is/are correct?
Answer» Based on the following, which comparison(s) is/are correct?

Discussion

32.	Why energy of an electron revolving around the nucleus of an atom remains conserved ?
Answer» Why energy of an electron revolving around the nucleus of an atom remains conserved ?

Discussion

33.	15. Iron carbonyl ,Fe(CO)5 (1)dinuclear (2)tetranuclear (3)trinuclear (4)mononuclear
Answer» 15. Iron carbonyl ,Fe(CO)5 (1)dinuclear (2)tetranuclear (3)trinuclear (4)mononuclear

Discussion

34.	A source emits 45 joules of energy in 15 s. What is the radiant flux of the source?
Answer» A source emits 45 joules of energy in 15 s. What is the radiant flux of the source?

Discussion

35.	A sample of ammonium phosphate (N H4)3 Po4 contain 3.18 moles of hydrogen atoms.the number of moles of oxygen atoms in the sample
Answer» A sample of ammonium phosphate (N H4)3 Po4 contain 3.18 moles of hydrogen atoms.the number of moles of oxygen atoms in the sample

Discussion

36.	How do you confirm the presence of hydrogen gas?
Answer» How do you confirm the presence of hydrogen gas?

Discussion

37.	a sold element x forms cubic crystal in which atoms occupy corners ,two atoms on each body diagonal and also one atom at each edge centre .effective no.of x atoms in the unit cell is
Answer» a sold element x forms cubic crystal in which atoms occupy corners ,two atoms on each body diagonal and also one atom at each edge centre .effective no.of x atoms in the unit cell is

Discussion

38.	Two masses of 1g and 4 grams are moving with equal Kinetic energies.The ratio of magnitudes of moment A is___ .
Answer» Two masses of 1g and 4 grams are moving with equal Kinetic energies.The ratio of magnitudes of moment A is___ .

Discussion

39.	Which equation is correct for Newton 2nd law
Answer» Which equation is correct for Newton 2nd law

Discussion

40.	21. Which of the following has highest number offormula units per unit cell?(1) NaCI type structure(2) Na2O type structure(3) CaF2 type structure(4) All have same number of formula unit
Answer» 21. Which of the following has highest number offormula units per unit cell?(1) NaCI type structure(2) Na2O type structure(3) CaF2 type structure(4) All have same number of formula unit

Discussion

41.	An element A in a compound ABD has oxidation number A n-. It is oxidised by Cr2O−27 in acidic medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is:
Answer» An element A in a compound ABD has oxidation number A ^n-. It is oxidised by $C r_{2} O_{7}^{- 2}$ in acidic medium. In the experiment 1.68 $\times$ $10^{- 3}$ x moles of $K_{2} C r_{2} O_{7}$ were used for 3.26 $\times$ $10^{- 3}$ moles of ABD. The new oxidation number of A after oxidation is:

Discussion

42.	The mass (in g) of 10 millimoles of FeSO4 is:
Answer» The mass (in g) of 10 millimoles of $F e S O_{4}$ is:

Discussion

43.	Consider the following reaction sequence. Na2S+Na2SO3+I2→A+NaI A+I2→NaI+B If the molar mass of anhydrous form of B is X (gm/mole) and the number of sulphur atoms per molecule of B is Y, then find the value of X/Y.
Answer» Consider the following reaction sequence. $N a_{2} S + N a_{2} S O_{3} + I_{2} \to A + N a I$ $A + I_{2} \to N a I + B$ If the molar mass of anhydrous form of $B$ is $X (g m / m o l e)$ and the number of sulphur atoms per molecule of $B$ is $Y$ , then find the value of $X / Y$ .

Discussion

44.	Difference between absorbate and adsorbant
Answer» Difference between absorbate and adsorbant

Discussion

45.	59 difference between phenyl and benzal
Answer» 59 difference between phenyl and benzal

Discussion

46.	Air of mass 1 kg, initially at 300 K and 10 bar, is allowed to expand isothermally till it reaches a pressure of 1 bar. Assuming air as an ideal gas with gas constant of 0.287 kJ/kgK, the change in entropy of air (in kJ/kgK, round off to two decimal places) is 0.66
Answer» Air of mass $1$ kg, initially at $300$ K and $10$ bar, is allowed to expand isothermally till it reaches a pressure of $1$ bar. Assuming air as an ideal gas with gas constant of $0.287$ kJ/kgK, the change in entropy of air (in kJ/kgK, round off to two decimal places) is 0.66

Discussion

47.	46. 200ml of 1M H_2SO_4 ,100ml of 1M HNO_3 and 100ml of 3 N H_3PO_4 are mixed together the number of H^+ ions present in the solution will be ??
Answer» 46. 200ml of 1M H_2SO_4 ,100ml of 1M HNO_3 and 100ml of 3 N H_3PO_4 are mixed together the number of H^+ ions present in the solution will be ??

Discussion

48.	3 Which of the following compounds has maximum number of primary H-bonds?? 1) CH4 2) C(CH3)4 What is meant by primary H bond?
Answer» 3 Which of the following compounds has maximum number of primary H-bonds?? 1) CH4 2) C(CH3)4 What is meant by primary H bond?

Discussion

49.	Consider the following ionic equilibriumGiven pKa1=2.3 and pKa2=9.7Then what is the isoelectric point of alanine?
Answer» Consider the following ionic equilibrium Given $p K_{a 1} = 2.3 and p K_{a 2} = 9.7$ Then what is the isoelectric point of alanine?

Discussion

50.	Silicareacts with hot solution of NaOH forming
Answer» Silicareacts with hot solution of NaOH forming

50.

Silicareacts with hot solution of NaOH forming

Answer»

Silicareacts with hot solution of NaOH forming

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

how many covalent bonds are there in PROPENE

Le-chatlier's principle is about equilibrium constant

in which of the following reaction boron does not as reducing agent ? (1) B+CO2--> (2) B+ Mg--> (3) B+ SiO2 --> (4) B+ HNO3--

In the case of alkali metals, the ionic character decreases in the order:

An ideal gas expands according to the law p power(2).V equals constant The internal energy of the gas (p is pressure ,V is volume) a ) increase continuously b ) decrease " c) remain constant d ) first increases and then decreases.

Explain preparation of alkyne with mechanism?

Which of the following reactions can produce benzaldehyde as a product?

The correct order of Lewis acid of the following-PI3, PBr3, PCl3 and PF3

The correct structure of tribromooctaoxide i

A solid AB has NaCl type structure. If radius of cation A+ is 200 pm then maximum possible radius of the anion B– is

In BCC type of lattice why Z(effective number of atoms )is taken to be 1as for BCC it should be 2 ?

For gases CH4(g) and N2(g) Both gases are in the same sealed flask with a total pressure of 750 mmHg. The partial pressure of N2(g) is 500 mmHg. Which is / are incorrect graph.

WHAT IS ELECTRON CONFIGURATION AND HOW TO FIND IT ?

vinylic halide are unreactive towards nucleophilic substitution rxn because of the following except: 1 C-ha\log en bond is strong 2 the ha\log en is bonded to sp2 hybridised carbon 3 a double bond character is developed in carbon ha\log en bond 4 halide ions are not good leaving grps

38. What are the condition for the formation of BHC and HBC when benzene is halogenated with chlorine?

A tyre pumped to a pressure of 4 atmosphere and 47 degree celcius suddendly bursts what is the the final temperature gamma is 1.5

What are metal carbonyls.

50.The empirical formula of none electrolyte is CH2O. A solution containing 3g of compound exerts the same osmotic pressure as that of 0.05M glucose solution. the molecular formula if the compound is A)CH2O B)C2H4O2 C)C4H8O4 D)C3H6O3

What is the order of the oxidizing power of perhalates?

0.02 M solution of H2A has pH=4. If Ka1 for the acid is 5×10−7 M, the concentration of HA− ion in the solution would be :

Oxymercuration-demercuration of 3, 3-dimethyl but-1-ene gives which alcohol?

what is geometric isomerism and preparation?

Which of the following molecule(s) has/have highest number of the features given below? 1. Have three traslational degrees of freedom. 2. Have two rotational degrees of freedom. 3. Triatomic and non linear 4. Triatomic and linear

How this equation will be balanced? Mg(co3)2 + Hcl -----> MgCl + H2o +CO2

why hyperconjugation effect does not occur in tripple bond atom (carbon

The correct order of atomic radii among the following elements is:

If f : A ➡ B and g : B ➡ C are one-one functions, show that gof is a one-one function.

Which of the following(s) is/are optically inactive?

46.The freezing point of equal molal aqueous solution will be highest for 1)C6H5NH3Cl 2)Ca(NO3)2 3)La(NO3)3 4)C6H12O6

Based on the following, which comparison(s) is/are correct?

Why energy of an electron revolving around the nucleus of an atom remains conserved ?

15. Iron carbonyl ,Fe(CO)5 (1)dinuclear (2)tetranuclear (3)trinuclear (4)mononuclear

A source emits 45 joules of energy in 15 s. What is the radiant flux of the source?

A sample of ammonium phosphate (N H4)3 Po4 contain 3.18 moles of hydrogen atoms.the number of moles of oxygen atoms in the sample

How do you confirm the presence of hydrogen gas?

a sold element x forms cubic crystal in which atoms occupy corners ,two atoms on each body diagonal and also one atom at each edge centre .effective no.of x atoms in the unit cell is

Two masses of 1g and 4 grams are moving with equal Kinetic energies.The ratio of magnitudes of moment A is___ .

Which equation is correct for Newton 2nd law

21. Which of the following has highest number offormula units per unit cell?(1) NaCI type structure(2) Na2O type structure(3) CaF2 type structure(4) All have same number of formula unit

An element A in a compound ABD has oxidation number A n-. It is oxidised by Cr2O−27 in acidic medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is:

The mass (in g) of 10 millimoles of FeSO4 is:

Consider the following reaction sequence. Na2S+Na2SO3+I2→A+NaI A+I2→NaI+B If the molar mass of anhydrous form of B is X (gm/mole) and the number of sulphur atoms per molecule of B is Y, then find the value of X/Y.

Difference between absorbate and adsorbant

59 difference between phenyl and benzal

Air of mass 1 kg, initially at 300 K and 10 bar, is allowed to expand isothermally till it reaches a pressure of 1 bar. Assuming air as an ideal gas with gas constant of 0.287 kJ/kgK, the change in entropy of air (in kJ/kgK, round off to two decimal places) is 0.66

46. 200ml of 1M H_2SO_4 ,100ml of 1M HNO_3 and 100ml of 3 N H_3PO_4 are mixed together the number of H^+ ions present in the solution will be ??

3 Which of the following compounds has maximum number of primary H-bonds?? 1) CH4 2) C(CH3)4 What is meant by primary H bond?

Consider the following ionic equilibriumGiven pKa1=2.3 and pKa2=9.7Then what is the isoelectric point of alanine?

Silicareacts with hot solution of NaOH forming