7248 + Interview Questions in Chemistry Page 19 InterviewSolution

901.	The Kyoto Protocol is associated with one of the following. This one is: (a) reduction in the use of chlorofluorocarbans (b) reduction in the emissiion of greenhouse gases (c) reduction in the cutting of forest trees (d) reduction in pollution of fresh water sources
Answer» The Kyoto Protocol is associated with one of the following. This one is: (a) reduction in the use of chlorofluorocarbans (b) reduction in the emissiion of greenhouse gases (c) reduction in the cutting of forest trees (d) reduction in pollution of fresh water sources

901.

The Kyoto Protocol is associated with one of the following. This one is: (a) reduction in the use of chlorofluorocarbans (b) reduction in the emissiion of greenhouse gases (c) reduction in the cutting of forest trees (d) reduction in pollution of fresh water sources

Answer»

The Kyoto Protocol is associated with one of the following. This one is:

(a) reduction in the use of chlorofluorocarbans

(b) reduction in the emissiion of greenhouse gases

(c) reduction in the cutting of forest trees

(d) reduction in pollution of fresh water sources

Discussion

902.	Estimate the value (x) to balance the given equation.Mg3N2(aq) + xH2O(l)→3mg(OH)2(aq) + 2NH3(g)
Answer» Estimate the value (x) to balance the given equation. ${Mg}_{3} N_{2} (aq) + {xH}_{2} O (l) \to 3 mg {(OH)}_{2} (aq) + 2 {NH}_{3} (g)$

Discussion

903.	Question 7Which of the following is correct for respiration in plants?(a) Respiration takes place only during daytime.(b) Respiration take place only during night.(c) Respiration takes place both during day and night.(d) Respiration takes place only when plants are not making food.
Answer» Question 7 Which of the following is correct for respiration in plants? (a) Respiration takes place only during daytime. (b) Respiration take place only during night. (c) Respiration takes place both during day and night. (d) Respiration takes place only when plants are not making food.

903.

Question 7Which of the following is correct for respiration in plants?(a) Respiration takes place only during daytime.(b) Respiration take place only during night.(c) Respiration takes place both during day and night.(d) Respiration takes place only when plants are not making food.

Answer»

Question 7

Which of the following is correct for respiration in plants?

(a) Respiration takes place only during daytime.

(b) Respiration take place only during night.

(c) Respiration takes place both during day and night.

(d) Respiration takes place only when plants are not making food.

Discussion

904.	Which of the following salts are not hydrated salts?
Answer» Which of the following salts are not hydrated salts?

Discussion

905.	Oxidation no. of C and N in HC
Answer» Oxidation no. of C and N in HC

Discussion

906.	Question 8.1Write the balanced chemical equation for the following and identify the type of reaction:Potassium bromide (aq) + Barium iodide (aq) → Potassium iodide (aq) + Barium bromide(s)
Answer» Question 8.1 Write the balanced chemical equation for the following and identify the type of reaction: Potassium bromide (aq) + Barium iodide (aq) $\to$ Potassium iodide (aq) + Barium bromide(s)

Discussion

907.	Give some alternatives for replacing the non-renewable resources. What is the need to replace these resources? [3 MARKS]
Answer» Give some alternatives for replacing the non-renewable resources. What is the need to replace these resources? [3 MARKS]

Discussion

908.	Name four different plastics
Answer» Name four different plastics

Discussion

909.	Select the type of plastic that can be recycled.
Answer» Select the type of plastic that can be recycled.

Discussion

910.	we say that photons are mass less (so don't exist in reality - no matter). Then how-come there are photon - electron interactions.(using debroglie and Compton formula-If a high energy photon interacts with an electron, the interaction can be described by the Compton scattering relationship or by the 4-vector formulation of relativistic momentum.)
Answer» we say that photons are mass less (so don't exist in reality - no matter). Then how-come there are photon - electron interactions.(using debroglie and Compton formula-If a high energy photon interacts with an electron, the interaction can be described by the Compton scattering relationship or by the 4-vector formulation of relativistic momentum.)

Discussion

911.	Other than iron does any other metal get rusted? If yes, explain how? [3 MARKS]
Answer» Other than iron does any other metal get rusted? If yes, explain how? [3 MARKS]

Discussion

912.	Fill in the blanks : Burning of wood and coal causes ………. of air. A liquid fuel, used in homes is ………. Fuel must be heated to its ……….. before it starts burning. Fire produced by oil cannot be controlled by ……………
Answer» Fill in the blanks : Burning of wood and coal causes ………. of air. A liquid fuel, used in homes is ………. Fuel must be heated to its ……….. before it starts burning. Fire produced by oil cannot be controlled by ……………

912.

Fill in the blanks : Burning of wood and coal causes ………. of air. A liquid fuel, used in homes is ………. Fuel must be heated to its ……….. before it starts burning. Fire produced by oil cannot be controlled by ……………

Answer»

Fill in the blanks :

Burning of wood and coal causes ………. of air.

A liquid fuel, used in homes is ……….

Fuel must be heated to its ……….. before it starts burning.

Fire produced by oil cannot be controlled by ……………

Discussion

913.	For acidic solution, the change observed in litmus paper is:
Answer» For acidic solution, the change observed in litmus paper is:

Discussion

914.	Which of these is used to repel moths?
Answer» Which of these is used to repel moths?

Discussion

915.	Name some petroleum products which are not used as fuel and also state their applications.
Answer» Name some petroleum products which are not used as fuel and also state their applications.

Discussion

916.	Question 31Although metals form basic oxides, which of the following metals form an amphoteric oxide?a) Na(b) Ca(c) Al(d) Cu
Answer» Question 31 Although metals form basic oxides, which of the following metals form an amphoteric oxide? a) $Na$ (b) $Ca$ (c) $Al$ (d) $Cu$

Discussion

917.	Name three fuels we get by digging into the earth. What is the common name gives to them? Why is this name given?
Answer» Name three fuels we get by digging into the earth. What is the common name gives to them? Why is this name given?

Discussion

918.	The various compounds present in coal tar are separated by the process of : (a) simple distillation (b) destructive distillation (c) fractional distillation (d) fractional crystallisation
Answer» The various compounds present in coal tar are separated by the process of : (a) simple distillation (b) destructive distillation (c) fractional distillation (d) fractional crystallisation

918.

The various compounds present in coal tar are separated by the process of : (a) simple distillation (b) destructive distillation (c) fractional distillation (d) fractional crystallisation

Answer»

The various compounds present in coal tar are separated by the process of :

(a) simple distillation

(b) destructive distillation

(c) fractional distillation

(d) fractional crystallisation

Discussion

919.	What is the difference in the atomic models of J.J Thomson and Rutherford??
Answer» What is the difference in the atomic models of J.J Thomson and Rutherford??

Discussion

920.	19. How many isomers of molecular formula C3H9N will liberate N2 gas on treatment with HNO2?
Answer» 19. How many isomers of molecular formula C3H9N will liberate N2 gas on treatment with HNO2?

Discussion

921.	what is double displacement reaction?? is it same with preparation of acids by double displacement reaction like below 200 degrees above 200 degrees.is there any difference between both or they both are same
Answer» what is double displacement reaction?? is it same with preparation of acids by double displacement reaction like below 200 degrees above 200 degrees. is there any difference between both or they both are same

Discussion

922.	0.1 mole of a carbohydrate having empirical formula CH_2O weigh 1g find molecular formula
Answer» 0.1 mole of a carbohydrate having empirical formula CH_2O weigh 1g find molecular formula

Discussion

923.	Give some examples of matter,which are not matter
Answer» Give some examples of matter,which are not matter

Discussion

924.	what is isobar and isotherm?
Answer» what is isobar and isotherm?

Discussion

925.	Which of the following are obtained by destructive distillation of coal?
Answer» Which of the following are obtained by destructive distillation of coal?

Discussion

926.	How to find that POAC is used for which atom in numerical
Answer» How to find that POAC is used for which atom in numerical

Discussion

927.	Suppose that A and B form the compounds B2A3 and B2A . If 0.05 mole of B2A3 weighs 9g and 0.1 mole of B2A weighs 10g the atomic weight of A and B respectively are
Answer» Suppose that A and B form the compounds B2A3 and B2A . If 0.05 mole of B2A3 weighs 9g and 0.1 mole of B2A weighs 10g the atomic weight of A and B respectively are

Discussion

928.	What are the properties of carbon which lead to the huge number of carbon compounds that we see around us?
Answer» What are the properties of carbon which lead to the huge number of carbon compounds that we see around us?

Discussion

929.	Why does oxygen support combustion ?
Answer» Why does oxygen support combustion ?

Discussion

930.	Give two examples for each of the following cases:(a) Physical changes that are reversible(b) Physical changes that are not reversible(c) Chemical changes
Answer» Give two examples for each of the following cases: (a) Physical changes that are reversible (b) Physical changes that are not reversible (c) Chemical changes

Discussion

931.	In which of the following processes does a change in state involve absorption of heat? A. Freezing B. Sublimation C. Condensation D. Melting
Answer» In which of the following processes does a change in state involve absorption of heat? A. Freezing B. Sublimation C. Condensation D. Melting

Discussion

932.	What are the benefits of conserving water
Answer» What are the benefits of conserving water

Discussion

933.	Question 19 Write True/False against the following statements. (a) Oxygen in air is an exhaustible natural resource. (b) Resources which are present in unlimited quantity in nature are called exhaustible natural resources. (c) Wildlife is an exhaustible natural resource (d) Under high temperature and pressure, dead plants get slowly converted to coal. (e) CNG is less polluting fuel than petrol and diesel.
Answer» Question 19 Write True/False against the following statements. (a) Oxygen in air is an exhaustible natural resource. (b) Resources which are present in unlimited quantity in nature are called exhaustible natural resources. (c) Wildlife is an exhaustible natural resource (d) Under high temperature and pressure, dead plants get slowly converted to coal. (e) CNG is less polluting fuel than petrol and diesel.

Discussion

934.	The composition of nitric acid was first determined by _____________
Answer» The composition of nitric acid was first determined by _____________

Discussion

935.	Which of the following is hardest naturally occurring substance?
Answer» Which of the following is hardest naturally occurring substance?

Discussion

936.	Which one of the following gases is used in electric bulbs?
Answer» Which one of the following gases is used in electric bulbs?

Discussion

937.	Give one example of each of the following. (a) A non-metal which is lustrous(b) A non-metal which is liquid at room temperature(c) A metal which is soft(d) A metal which is non-malleable
Answer» Give one example of each of the following. (a) A non-metal which is lustrous (b) A non-metal which is liquid at room temperature (c) A metal which is soft (d) A metal which is non-malleable

Discussion

938.	As we move from inner part of flame to outer edge-
Answer» As we move from inner part of flame to outer edge-

Discussion

939.	An open rectangular tank (5 m×4 m×3 m) containing water upto a height of 2 m as shown, is accelerated (a0) horizontally along the larger side, and the water is just about to spill If the acceleration is increased by 20%, then the percenatage of water spill is (Answer upto two decimal places)
Answer» An open rectangular tank ( $5 m \times 4 m \times 3 m$ ) containing water upto a height of $2 m$ as shown, is accelerated $(a_{0})$ horizontally along the larger side, and the water is just about to spill If the acceleration is increased by 20%, then the percenatage of water spill is (Answer upto two decimal places)

Discussion

940.	What is the characteristic of the cap of eye drop bottles?
Answer» What is the characteristic of the cap of eye drop bottles?

Discussion

941.	Why according to Rutherford positively charged particles are concentrated at the centre of the atom when alpha particles were sent through a thin metal foil.
Answer» Why according to Rutherford positively charged particles are concentrated at the centre of the atom when alpha particles were sent through a thin metal foil.

Discussion

942.	Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :
Answer» Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :

Discussion

943.	Malleability is the property of:
Answer» Malleability is the property of:

Discussion

944.	Gases can be compressed easily because___.
Answer» Gases can be compressed easily because___.

Discussion

945.	The plant material used for making of rayon is :-
Answer» The plant material used for making of rayon is :-

Discussion

946.	Why is there no double bond in BF3??
Answer» Why is there no double bond in BF3??

Discussion

947.	What will happen if....? And why ?(a) Nails are made of plastic.(b) A bell is made of wood.(c) Rubber is not fitted on a pair of tongs.(d) A knife is made of wood.(e) An axe is made of rubber.
Answer» What will happen if....? And why ? (a) Nails are made of plastic. (b) A bell is made of wood. (c) Rubber is not fitted on a pair of tongs. (d) A knife is made of wood. (e) An axe is made of rubber.

Discussion

948.	Choose the correct option.
Answer» Choose the correct option.

Discussion

949.	When simple distillation method is used? Write the steps to separate acetone and water mixture by simple distillation.
Answer» When simple distillation method is used? Write the steps to separate acetone and water mixture by simple distillation.

Discussion

950.	Give one use each of the following metals: (a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury
Answer» Give one use each of the following metals: (a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury

950.

Give one use each of the following metals: (a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury

Answer»

Give one use each of the following metals:

(a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury

Discussion

Explore topic-wise InterviewSolutions in .

The Kyoto Protocol is associated with one of the following. This one is: (a) reduction in the use of chlorofluorocarbans (b) reduction in the emissiion of greenhouse gases (c) reduction in the cutting of forest trees (d) reduction in pollution of fresh water sources

Estimate the value (x) to balance the given equation.Mg3N2(aq) + xH2O(l)→3mg(OH)2(aq) + 2NH3(g)

Question 7Which of the following is correct for respiration in plants?(a) Respiration takes place only during daytime.(b) Respiration take place only during night.(c) Respiration takes place both during day and night.(d) Respiration takes place only when plants are not making food.

Which of the following salts are not hydrated salts?

Oxidation no. of C and N in HC

Question 8.1Write the balanced chemical equation for the following and identify the type of reaction:Potassium bromide (aq) + Barium iodide (aq) → Potassium iodide (aq) + Barium bromide(s)

Give some alternatives for replacing the non-renewable resources. What is the need to replace these resources? [3 MARKS]

Name four different plastics

Select the type of plastic that can be recycled.

Other than iron does any other metal get rusted? If yes, explain how? [3 MARKS]

Fill in the blanks : Burning of wood and coal causes ………. of air. A liquid fuel, used in homes is ………. Fuel must be heated to its ……….. before it starts burning. Fire produced by oil cannot be controlled by ……………

For acidic solution, the change observed in litmus paper is:

Which of these is used to repel moths?

Name some petroleum products which are not used as fuel and also state their applications.

Question 31Although metals form basic oxides, which of the following metals form an amphoteric oxide?a) Na(b) Ca(c) Al(d) Cu

Name three fuels we get by digging into the earth. What is the common name gives to them? Why is this name given?

The various compounds present in coal tar are separated by the process of : (a) simple distillation (b) destructive distillation (c) fractional distillation (d) fractional crystallisation

What is the difference in the atomic models of J.J Thomson and Rutherford??

19. How many isomers of molecular formula C3H9N will liberate N2 gas on treatment with HNO2?

what is double displacement reaction?? is it same with preparation of acids by double displacement reaction like below 200 degrees above 200 degrees.is there any difference between both or they both are same

0.1 mole of a carbohydrate having empirical formula CH_2O weigh 1g find molecular formula

Give some examples of matter,which are not matter

what is isobar and isotherm?

Which of the following are obtained by destructive distillation of coal?

How to find that POAC is used for which atom in numerical

Suppose that A and B form the compounds B2A3 and B2A . If 0.05 mole of B2A3 weighs 9g and 0.1 mole of B2A weighs 10g the atomic weight of A and B respectively are

What are the properties of carbon which lead to the huge number of carbon compounds that we see around us?

Why does oxygen support combustion ?

Give two examples for each of the following cases:(a) Physical changes that are reversible(b) Physical changes that are not reversible(c) Chemical changes

In which of the following processes does a change in state involve absorption of heat? A. Freezing B. Sublimation C. Condensation D. Melting

What are the benefits of conserving water

The composition of nitric acid was first determined by _____________

Which of the following is hardest naturally occurring substance?

Which one of the following gases is used in electric bulbs?

Give one example of each of the following. (a) A non-metal which is lustrous(b) A non-metal which is liquid at room temperature(c) A metal which is soft(d) A metal which is non-malleable

As we move from inner part of flame to outer edge-

An open rectangular tank (5 m×4 m×3 m) containing water upto a height of 2 m as shown, is accelerated (a0) horizontally along the larger side, and the water is just about to spill If the acceleration is increased by 20%, then the percenatage of water spill is (Answer upto two decimal places)

What is the characteristic of the cap of eye drop bottles?

Why according to Rutherford positively charged particles are concentrated at the centre of the atom when alpha particles were sent through a thin metal foil.

Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :

Malleability is the property of:

Gases can be compressed easily because___.

The plant material used for making of rayon is :-

Why is there no double bond in BF3??

What will happen if....? And why ?(a) Nails are made of plastic.(b) A bell is made of wood.(c) Rubber is not fitted on a pair of tongs.(d) A knife is made of wood.(e) An axe is made of rubber.

Choose the correct option.

When simple distillation method is used? Write the steps to separate acetone and water mixture by simple distillation.

Give one use each of the following metals: (a) Iron (b) Copper (c) Aluminium (d) Zinc (e) Mercury