46295 + Interview Questions in Chemistry

1.	The formation of polyethylene from calcium carbide takes place as follows: CaC2+2H2O → Ca(OH)2 + C2H2 C2H2 + H2 → C2H4 nC2H4 → (−CH2−CH2−)n the amount of polyethylene obtained from 64 kg of CaC2 is:
Answer» The formation of polyethylene from calcium carbide takes place as follows: $C a C_{2} + 2 H_{2} O$ $\to$ $C a {(O H)}_{2}$ + $C_{2} H_{2}$ $C_{2} H_{2}$ + $H_{2}$ $\to$ $C_{2} H_{4}$ $n C_{2} H_{4}$ $\to$ ${(- C H_{2} - C H_{2} -)}_{n}$ the amount of polyethylene obtained from 64 kg of $C a C_{2}$ is:

1.

The formation of polyethylene from calcium carbide takes place as follows: CaC2+2H2O → Ca(OH)2 + C2H2 C2H2 + H2 → C2H4 nC2H4 → (−CH2−CH2−)n the amount of polyethylene obtained from 64 kg of CaC2 is:

Answer»

The formation of polyethylene from calcium carbide takes place as follows:

$C a C_{2} + 2 H_{2} O$ $\to$ $C a {(O H)}_{2}$ + $C_{2} H_{2}$
$C_{2} H_{2}$ + $H_{2}$ $\to$ $C_{2} H_{4}$
$n C_{2} H_{4}$ $\to$ ${(- C H_{2} - C H_{2} -)}_{n}$
the amount of polyethylene obtained from 64 kg of $C a C_{2}$ is:

Discussion

2.	which of the following is hypertonic at constant temperature: 1) 1M aq glucose 2) 1M benzoic acid in benzene 3) 1 M aq ammonium phosphate 4) 1M aq CaCl2
Answer» which of the following is hypertonic at constant temperature: 1) 1M aq glucose 2) 1M benzoic acid in benzene 3) 1 M aq ammonium phosphate 4) 1M aq CaCl2

Discussion

3.	In the same reaction with hcl,an alkene reacts with the markovnikovs rule to give a product 1-chloro-1-methylcyclohexane.The possible alkene is
Answer» In the same reaction with hcl,an alkene reacts with the markovnikovs rule to give a product 1-chloro-1-methylcyclohexane.The possible alkene is

Discussion

4.	Find out number of reagents which can oxidise Me−O\|\|C−H(I)I2/NaOH(II)KMnO4/H⊕(III)Tollen's reagent(IV)LiAlH4(V)NaBH4(VI)SeO2/Δ(VII)NH2−NH2/NaOH
Answer» Find out number of reagents which can oxidise $M e - O \| \| C - H$ $(I) I_{2} / N a O H (I I) K M n O_{4} / H^{\oplus} (I I I) Tollen's reagent (I V) L i A l H_{4} (V) N a B H_{4} (V I) S e O_{2} / Δ$ $(V I I) N H_{2} - N H_{2} / N a O H$

Discussion

5.	How many electrons have the values n = 2, l = 1 and in the configuration 1s^2 2s^2 2p^3?(1)-1(2)-3(3)-5(4)-7
Answer» How many electrons have the values n = 2, l = 1 and in the configuration 1s^2 2s^2 2p^3? (1)-1 (2)-3 (3)-5 (4)-7

Discussion

6.	Elements of group 14 exhibit oxidation state of
Answer» Elements of group 14 exhibit oxidation state of

Discussion

7.	number of relations that can be defined on the set A={a,b,c} are?
Answer» number of relations that can be defined on the set A={a,b,c} are?

Discussion

8.	41. If A is filled in half of tetrahedral voids as well as octahedral voids in equal amount in a ccp lattice formed by oxide ion then formula of solid will be ?
Answer» 41. If A is filled in half of tetrahedral voids as well as octahedral voids in equal amount in a ccp lattice formed by oxide ion then formula of solid will be ?

Discussion

9.	What is the final temperature of 0.10 mole mono atomic ideal gas that perform 75 cal of work adiabatically if the initial temperature is 227∘C ? (use R=2 cal K−1 mol−1)
Answer» What is the final temperature of $0.10$ mole mono atomic ideal gas that perform $75 cal$ of work adiabatically if the initial temperature is $227^{\circ} C$ ? (use $R = 2 {cal K}^{- 1} {mol}^{- 1}$ )

Discussion

10.	Which of the following compound has the highest lattice energy?
Answer» Which of the following compound has the highest lattice energy?

Discussion

11.	Give the iupac names [Pt(NH3)4][PtCl4] [Pt(NH3)4Cl2][PtCl4]
Answer» Give the iupac names [Pt(NH3)4][PtCl4] [Pt(NH3)4Cl2][PtCl4]

11.

Give the iupac names [Pt(NH3)4][PtCl4] [Pt(NH3)4Cl2][PtCl4]

Answer»

Give the iupac names

[Pt(NH3)4][PtCl4]

[Pt(NH3)4Cl2][PtCl4]

Discussion

12.	20. How many molecules of chlorine should be deposited from molten NaCl in 1 minute by current of 300mA
Answer» 20. How many molecules of chlorine should be deposited from molten NaCl in 1 minute by current of 300mA

Discussion

13.	Which of the following molecules has the maximum dipole moment?
Answer» Which of the following molecules has the maximum dipole moment?

Discussion

14.	Explain with the help of formulae the expansion coefficients of liquid and gas.
Answer» Explain with the help of formulae the expansion coefficients of liquid and gas.

Discussion

15.	When a small amount of HCL os added to a buffer solution of acetic acid and sodium acetate-Ph increasesH+ decreaseDissociation of acetic acid decrease
Answer» When a small amount of HCL os added to a buffer solution of acetic acid and sodium acetate- Ph increases H+ decrease Dissociation of acetic acid decrease

Discussion

16.	calculate the number of molecules of s_8 present in 32gm of solid sulphur
Answer» calculate the number of molecules of s_8 present in 32gm of solid sulphur

Discussion

17.	How the concentration of any substance is monitored during the reaction?
Answer» How the concentration of any substance is monitored during the reaction?

Discussion

18.	The pressure of a gas filled in the bulb of a constantvolume gas thermometer at temperatures O"C and100 C are 27.50 cm and 37.50 cm of Hg respectivelyAt an unknown temperature the pressure is32.45 cm of Hg. Unknown temperature is
Answer» The pressure of a gas filled in the bulb of a constantvolume gas thermometer at temperatures O"C and100 C are 27.50 cm and 37.50 cm of Hg respectivelyAt an unknown temperature the pressure is32.45 cm of Hg. Unknown temperature is

Discussion

19.	The weight of a molecule of C60H22 is:
Answer» The weight of a molecule of $C_{60} H_{22}$ is:

Discussion

20.	Why alcohol cannot be used as solvents for grignard reagent ?
Answer» Why alcohol cannot be used as solvents for grignard reagent ?

Discussion

21.	The weight of a molecule of the compound C60H122 is
Answer» The weight of a molecule of the compound $C_{60} H_{122}$ is

Discussion

22.	The density of 3M solution of Na2S2O3 is 1.25 g mL−1. Calculate, mole fraction of Na2S2O3.
Answer» The density of 3M solution of $N a_{2} S_{2} O_{3}$ is $1.25$ g mL $^{- 1}$ . Calculate, mole fraction of $N a_{2} S_{2} O_{3}$ .

Discussion

23.	In halogenation of arenes, the main function of using a lewis acids like AlCl3 or FeBr3 is for the generation of :(Here X is the halogen)
Answer» In halogenation of arenes, the main function of using a lewis acids like $A l C l_{3} o r F e B r_{3}$ is for the generation of : (Here X is the halogen)

Discussion

24.	What are ionic solid?
Answer» What are ionic solid?

Discussion

25.	In which of the following polymers ethylene glycol is one of the monomer units?
Answer» In which of the following polymers ethylene glycol is one of the monomer units?

25.

In which of the following polymers ethylene glycol is one of the monomer units?

Answer»

In which of the following polymers ethylene glycol is one of the monomer units?

Discussion

26.	Coagulation values of the electrolytes AlCl3 and NaCl for As2S3 solution are 0.093 and 52 respectively. How many times AlCl3 has a greater coagulating power than NaCl?
Answer» Coagulation values of the electrolytes $A l C l_{3}$ and $N a C l$ for $A s_{2} S_{3}$ solution are $0.093$ and $52$ respectively. How many times $A l C l_{3}$ has a greater coagulating power than $N a C l$ ?

Discussion

27.	With the help of electronic configuration of Mn and V explain giving reasons which one is more paramagnetic.
Answer» With the help of electronic configuration of Mn and V explain giving reasons which one is more paramagnetic.

Discussion

28.	Does benzene show +R or -R effect? Explain why
Answer» Does benzene show +R or -R effect? Explain why

Discussion

29.	In habers process 30 liter of dihydrogen and 30 liter of dinitrogen were taken for reaction which yielded only 50 % of the product . What will be the composition of gaseous mixture under aforesaid condition jn the end? A ) 20 L of ammonia 20 L of nitrogen 20 L of hydrogen B) 20L of ammonia 25L of nitrogen 15L of hydrogen C) 20L of ammonia 10L of nitrogen 30L of hydrogen D) 30 L of ammonia 25L of nitrogen 15 L of hydrogen
Answer» In habers process 30 liter of dihydrogen and 30 liter of dinitrogen were taken for reaction which yielded only 50 % of the product . What will be the composition of gaseous mixture under aforesaid condition jn the end? A ) 20 L of ammonia 20 L of nitrogen 20 L of hydrogen B) 20L of ammonia 25L of nitrogen 15L of hydrogen C) 20L of ammonia 10L of nitrogen 30L of hydrogen D) 30 L of ammonia 25L of nitrogen 15 L of hydrogen

Discussion

30.	44. When a gaseous olefinic hydrocarbon is burnt completely in excess of O2, a contraction in volume equal to double the volume of hydrocarbon is noticed then hydrocarbon will be?
Answer» 44. When a gaseous olefinic hydrocarbon is burnt completely in excess of O2, a contraction in volume equal to double the volume of hydrocarbon is noticed then hydrocarbon will be?

Discussion

31.	Which reaction will take place spontaneously?
Answer» Which reaction will take place spontaneously?

Discussion

32.	The total number of atoms in one molecule of the monomer of Perlon L (Nylon-6) is X and the total number of hydrogen atoms in one molecule of the monomer of Perlon L is Y, then what is the value of X-Y?
Answer» The total number of atoms in one molecule of the monomer of Perlon L (Nylon-6) is X and the total number of hydrogen atoms in one molecule of the monomer of Perlon L is Y, then what is the value of X-Y?

Discussion

33.	On electrolysis of dil. NaCl using Platinum (Pt) electrode, the product obtained at cathode will be:
Answer» On electrolysis of dil. $N a C l$ using Platinum $(P t)$ electrode, the product obtained at cathode will be:

Discussion

34.	Tetrahedral void is surrounded by 5 layers as 3 on the sides, one below it and one above it?
Answer» Tetrahedral void is surrounded by 5 layers as 3 on the sides, one below it and one above it?

Discussion

35.	6. Ag2CrO4 Find out the general formula for solubility product if solubility is Smol/L
Answer» 6. Ag2CrO4 Find out the general formula for solubility product if solubility is Smol/L

Discussion

36.	2nd order reaction chemistry
Answer» 2nd order reaction chemistry

Discussion

37.	Which of the following will contain the highest number of oxygen atoms A) 16 gram of O atom B) 32 gram of O2 molecule C) 48 gram of O3 molecule D)None,all have the same no of atoms i saw the answer but 32gram of O2molecule means 1mole O2molecules and 48g O3molecules means 1mole of O3molecules right.therefore c should be correct. Am i right
Answer» Which of the following will contain the highest number of oxygen atoms A) 16 gram of O atom B) 32 gram of O2 molecule C) 48 gram of O3 molecule D)None,all have the same no of atoms i saw the answer but 32gram of O2molecule means 1mole O2molecules and 48g O3molecules means 1mole of O3molecules right.therefore c should be correct. Am i right

Discussion

38.	Initially 22.2 g of calcium chloride are dissolved in water to make a 500 mL solution. Then the solution is again diluted upto 2000 mL. Calculate the molarity of Cl− ions in the final solution if the 80% of the given salt dissociates in the final solution:
Answer» Initially 22.2 g of calcium chloride are dissolved in water to make a 500 mL solution. Then the solution is again diluted upto 2000 mL. Calculate the molarity of $C l^{-}$ ions in the final solution if the 80% of the given salt dissociates in the final solution:

Discussion

39.	Approximately how much percent of carbohydrate digested from food is converted to fats and are stored in the body?
Answer» Approximately how much percent of carbohydrate digested from food is converted to fats and are stored in the body?

Discussion

40.	Which is the thermodynamically most stable allotrope of phosphorus?
Answer» Which is the thermodynamically most stable allotrope of phosphorus?

Discussion

41.	The compound CH3CH=CHCH3 and CH3CH2CH=CH2 are
Answer» The compound $C H_{3} C H = C H C H_{3}$ and $C H_{3} C H_{2} C H = C H_{2}$ are

Discussion

42.	What will be the oxidation number of "O" in O2F2 and OF2 respectively ?
Answer» What will be the oxidation number of " $O$ " in $O_{2} F_{2}$ and $O F_{2}$ respectively ?

Discussion

43.	34.Heat of neutralization of lithium hydroxide and hydrochloric acid at 25^° C is 34.868 KJ per mole. The heat of ionisation of Lithium Hydroxide is
Answer» 34.Heat of neutralization of lithium hydroxide and hydrochloric acid at 25^° C is 34.868 KJ per mole. The heat of ionisation of Lithium Hydroxide is

Discussion

44.	The reaction between hydrogen-oxygen mixture is used to produce very high temperatures (≈2500oC) needed for certain types of welding operations. H2(g)+12O2(g)→H2O(g); △H=−230.9 kJ Quantity of heat, (in kJ) evolved when a 200 g mixture containing equal parts of H2 and O2 by mass is burned, is
Answer» The reaction between hydrogen-oxygen mixture is used to produce very high temperatures $(\approx 2500^{o} C)$ needed for certain types of welding operations. $H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (g); △ H = - 230.9 k J$ Quantity of heat, $(i n k J)$ evolved when a $200 g$ mixture containing equal parts of $H_{2}$ and $O_{2}$ by mass is burned, is

Discussion

45.	Predict the product of the aldol condensation reaction.
Answer» Predict the product of the aldol condensation reaction.

Discussion

46.	1. conversion: aniline to chlorobenzene2. p- dichlorobenzene has higher m.p. then those of o- and m- isomers. Discuss.
Answer» 1. conversion: aniline to chlorobenzene 2. p- dichlorobenzene has higher m.p. then those of o- and m- isomers. Discuss.

Discussion

47.	I have a doubt that will all the chemical reactions given in p-block equally important ? If not may know the important ones please.I feel difficult to get through all of them.
Answer» I have a doubt that will all the chemical reactions given in p-block equally important ? If not may know the important ones please.I feel difficult to get through all of them.

Discussion

48.	Number of electrons present in 18ml of water
Answer» Number of electrons present in 18ml of water

Discussion

49.	Thiol group is present in :
Answer» Thiol group is present in :

Discussion

50.	How many isomers are possible in C_5H_{12} if a H-atom is replace by the Cl-ato
Answer» How many isomers are possible in C_5H_{12} if a H-atom is replace by the Cl-ato

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The formation of polyethylene from calcium carbide takes place as follows: CaC2+2H2O → Ca(OH)2 + C2H2 C2H2 + H2 → C2H4 nC2H4 → (−CH2−CH2−)n the amount of polyethylene obtained from 64 kg of CaC2 is:

which of the following is hypertonic at constant temperature: 1) 1M aq glucose 2) 1M benzoic acid in benzene 3) 1 M aq ammonium phosphate 4) 1M aq CaCl2

In the same reaction with hcl,an alkene reacts with the markovnikovs rule to give a product 1-chloro-1-methylcyclohexane.The possible alkene is

Find out number of reagents which can oxidise Me−O||C−H(I)I2/NaOH(II)KMnO4/H⊕(III)Tollen's reagent(IV)LiAlH4(V)NaBH4(VI)SeO2/Δ(VII)NH2−NH2/NaOH

How many electrons have the values n = 2, l = 1 and in the configuration 1s^2 2s^2 2p^3?(1)-1(2)-3(3)-5(4)-7

Elements of group 14 exhibit oxidation state of

number of relations that can be defined on the set A={a,b,c} are?

41. If A is filled in half of tetrahedral voids as well as octahedral voids in equal amount in a ccp lattice formed by oxide ion then formula of solid will be ?

What is the final temperature of 0.10 mole mono atomic ideal gas that perform 75 cal of work adiabatically if the initial temperature is 227∘C ? (use R=2 cal K−1 mol−1)

Which of the following compound has the highest lattice energy?

Give the iupac names [Pt(NH3)4][PtCl4] [Pt(NH3)4Cl2][PtCl4]

20. How many molecules of chlorine should be deposited from molten NaCl in 1 minute by current of 300mA

Which of the following molecules has the maximum dipole moment?

Explain with the help of formulae the expansion coefficients of liquid and gas.

When a small amount of HCL os added to a buffer solution of acetic acid and sodium acetate-Ph increasesH+ decreaseDissociation of acetic acid decrease

calculate the number of molecules of s_8 present in 32gm of solid sulphur

How the concentration of any substance is monitored during the reaction?

The pressure of a gas filled in the bulb of a constantvolume gas thermometer at temperatures O"C and100 C are 27.50 cm and 37.50 cm of Hg respectivelyAt an unknown temperature the pressure is32.45 cm of Hg. Unknown temperature is

The weight of a molecule of C60H22 is:

Why alcohol cannot be used as solvents for grignard reagent ?

The weight of a molecule of the compound C60H122 is

The density of 3M solution of Na2S2O3 is 1.25 g mL−1. Calculate, mole fraction of Na2S2O3.

In halogenation of arenes, the main function of using a lewis acids like AlCl3 or FeBr3 is for the generation of :(Here X is the halogen)

What are ionic solid?

In which of the following polymers ethylene glycol is one of the monomer units?

Coagulation values of the electrolytes AlCl3 and NaCl for As2S3 solution are 0.093 and 52 respectively. How many times AlCl3 has a greater coagulating power than NaCl?

With the help of electronic configuration of Mn and V explain giving reasons which one is more paramagnetic.

Does benzene show +R or -R effect? Explain why

44. When a gaseous olefinic hydrocarbon is burnt completely in excess of O2, a contraction in volume equal to double the volume of hydrocarbon is noticed then hydrocarbon will be?

Which reaction will take place spontaneously?

The total number of atoms in one molecule of the monomer of Perlon L (Nylon-6) is X and the total number of hydrogen atoms in one molecule of the monomer of Perlon L is Y, then what is the value of X-Y?

On electrolysis of dil. NaCl using Platinum (Pt) electrode, the product obtained at cathode will be:

Tetrahedral void is surrounded by 5 layers as 3 on the sides, one below it and one above it?

6. Ag2CrO4 Find out the general formula for solubility product if solubility is Smol/L

2nd order reaction chemistry

Initially 22.2 g of calcium chloride are dissolved in water to make a 500 mL solution. Then the solution is again diluted upto 2000 mL. Calculate the molarity of Cl− ions in the final solution if the 80% of the given salt dissociates in the final solution:

Approximately how much percent of carbohydrate digested from food is converted to fats and are stored in the body?

Which is the thermodynamically most stable allotrope of phosphorus?

The compound CH3CH=CHCH3 and CH3CH2CH=CH2 are

What will be the oxidation number of "O" in O2F2 and ​ OF2 respectively ?

34.Heat of neutralization of lithium hydroxide and hydrochloric acid at 25^° C is 34.868 KJ per mole. The heat of ionisation of Lithium Hydroxide is

Predict the product of the aldol condensation reaction.

1. conversion: aniline to chlorobenzene2. p- dichlorobenzene has higher m.p. then those of o- and m- isomers. Discuss.

I have a doubt that will all the chemical reactions given in p-block equally important ? If not may know the important ones please.I feel difficult to get through all of them.

Number of electrons present in 18ml of water

Thiol group is present in :

How many isomers are possible in C_5H_{12} if a H-atom is replace by the Cl-ato

What will be the oxidation number of "O" in O2F2 and OF2 respectively ?