7248 + Interview Questions in Chemistry Page 99 InterviewSolution

4901.	What is meant by biodegradable and non-biodegradable materials ? Give examples of two non-biodegrable materials.
Answer» What is meant by biodegradable and non-biodegradable materials ? Give examples of two non-biodegrable materials.

Discussion

4902.	Which among the following non-metal combines with sodium to form common salt?
Answer» Which among the following non-metal combines with sodium to form common salt?

Discussion

4903.	When a lead strip is inserted into a copper chloride solution then products will be ______
Answer» When a lead strip is inserted into a copper chloride solution then products will be ______

Discussion

4904.	The maximum number of electrons that can occupy the shell K, L, M, N respectively are:
Answer» The maximum number of electrons that can occupy the shell K, L, M, N respectively are:

Discussion

4905.	Who discovered atomic mass?
Answer» Who discovered atomic mass?

Discussion

4906.	Who invented plastic
Answer» Who invented plastic

Discussion

4907.	What will be the atomicity of: a) The molecule which we consume during respiration and this molecule is also released during photosynthesis. b) The red coloured element which we use in match boxes. c) The pale blue gas which forms a layer that absorbs sun's UV radiation.
Answer» What will be the atomicity of: a) The molecule which we consume during respiration and this molecule is also released during photosynthesis. b) The red coloured element which we use in match boxes. c) The pale blue gas which forms a layer that absorbs sun's UV radiation.

4907.

What will be the atomicity of: a) The molecule which we consume during respiration and this molecule is also released during photosynthesis. b) The red coloured element which we use in match boxes. c) The pale blue gas which forms a layer that absorbs sun's UV radiation.

Answer»

What will be the atomicity of:

a) The molecule which we consume during respiration and this molecule is also released during photosynthesis.

b) The red coloured element which we use in match boxes.

c) The pale blue gas which forms a layer that absorbs sun's UV radiation.

Discussion

4908.	Question 22 (i) Fill in the blanks (i) A polymer is a chain of many small units joined together which are called ___.
Answer» Question 22 (i) Fill in the blanks (i) A polymer is a chain of many small units joined together which are called ___.

Discussion

4909.	Which of the following property does not describe a compound?
Answer» Which of the following property does not describe a compound?

Discussion

4910.	Which among the following is a major water pollutant leading to death of aquatic species?
Answer» Which among the following is a major water pollutant leading to death of aquatic species?

Discussion

4911.	How are metals and non-metals different physically? [2 MARKS]
Answer» How are metals and non-metals different physically? [2 MARKS]

Discussion

4912.	Protium differs from deuterium in
Answer» Protium differs from deuterium in

Discussion

4913.	Choose the correct option based on the statements given below: Statement I:- The property of metals to get beaten into thin sheets is known as ductility. Statement II:- Platinum is the most ductile metal.
Answer» Choose the correct option based on the statements given below: Statement I:- The property of metals to get beaten into thin sheets is known as ductility. Statement II:- Platinum is the most ductile metal.

4913.

Choose the correct option based on the statements given below: Statement I:- The property of metals to get beaten into thin sheets is known as ductility. Statement II:- Platinum is the most ductile metal.

Answer»

Choose the correct option based on the statements given below:

Statement I:- The property of metals to get beaten into thin sheets is known as ductility.

Statement II:- Platinum is the most ductile metal.

Discussion

4914.	What is meant by spontaneous combustion ? Give one example of spontaneous combustion.
Answer» What is meant by spontaneous combustion ? Give one example of spontaneous combustion.

Discussion

4915.	Incomplete burning might take place when -
Answer» Incomplete burning might take place when -

Discussion

4916.	Different colours are observed in different flames is due to
Answer» Different colours are observed in different flames is due to

Discussion

4917.	If empirical formula of a compound is C5H4 and the value of n is 2, then molecular formula of the compound is:
Answer» If empirical formula of a compound is C₅H₄and the value of n is 2, then molecular formula of the compound is:

Discussion

4918.	Which of these chemical reactions produce a gas?
Answer» Which of these chemical reactions produce a gas?

Discussion

4919.	________ gas released as a result of incomplete burning of fuels is a toxic gas.
Answer» ________ gas released as a result of incomplete burning of fuels is a toxic gas.

Discussion

4920.	Which zone of candle flame has the least and highest temperature? [2 MARKS]
Answer» Which zone of candle flame has the least and highest temperature? [2 MARKS]

Discussion

4921.	Which of the following is/are the crystalline form/s of carbon?
Answer» Which of the following is/are the crystalline form/s of carbon?

Discussion

4922.	The power generated in a windmill ___.
Answer» The power generated in a windmill ___.

Discussion

4923.	_______ + heat ⟶K2MnO4+MnO2+O2
Answer» _______ + heat $⟶ K_{2} M n O_{4} + M n O_{2} + O_{2}$

Discussion

4924.	Which separation process is used to recover both solute and solvent from a solid-liquid solution?
Answer» Which separation process is used to recover both solute and solvent from a solid-liquid solution?

Discussion

4925.	When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished. (a) Name the substance X. (b) How does this substance extinguish the fire ? (c) Name another susbtance which behaves like X.
Answer» When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished. (a) Name the substance X. (b) How does this substance extinguish the fire ? (c) Name another susbtance which behaves like X.

4925.

When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished. (a) Name the substance X. (b) How does this substance extinguish the fire ? (c) Name another susbtance which behaves like X.

Answer»

When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished.

(a) Name the substance X.

(b) How does this substance extinguish the fire ?

(c) Name another susbtance which behaves like X.

Discussion

4926.	Match the substances given in column A with their uses given in column B: AB(i)Gold (a)Thermometer(ii)Iron (b)Electric wires(iii)Aluminium (c)Wrapping food(iv)Carbon (d)Jewellery(v)Copper (e)Machinery(vi)Mercury (f)Fuel
Answer» Match the substances given in column A with their uses given in column B: $\begin{matrix} A & B (i) & G o l d & (a) & T h e r m o m e t e r (i i) & I r o n & (b) & E l e c t r i c w i r e s (i i i) & A l u m i n i u m & (c) & W r a p p i n g f o o d (i v) & C a r b o n & (d) & J e w e l l e r y (v) & C o p p e r & (e) & M a c h i n e r y (v i) & M e r c u r y & (f) & F u e l \end{matrix}$

4926.

Match the substances given in column A with their uses given in column B: AB(i)Gold (a)Thermometer(ii)Iron (b)Electric wires(iii)Aluminium (c)Wrapping food(iv)Carbon (d)Jewellery(v)Copper (e)Machinery(vi)Mercury (f)Fuel

Answer»

Match the substances given in column A with their uses given in column B:

$\begin{matrix} A & B (i) & G o l d & (a) & T h e r m o m e t e r (i i) & I r o n & (b) & E l e c t r i c w i r e s (i i i) & A l u m i n i u m & (c) & W r a p p i n g f o o d (i v) & C a r b o n & (d) & J e w e l l e r y (v) & C o p p e r & (e) & M a c h i n e r y (v i) & M e r c u r y & (f) & F u e l \end{matrix}$

Discussion

4927.	How can we calculate the change in potential energy?
Answer» How can we calculate the change in potential energy?

Discussion

4928.	Which among the following statements is not true about an atom?
Answer» Which among the following statements is not true about an atom?

Discussion

4929.	Is destructive distillation and pyrolysis the same?
Answer» Is destructive distillation and pyrolysis the same?

Discussion

4930.	Describe a flame
Answer» Describe a flame

Discussion

4931.	What is chromatography ? For which type of mixture is it used?
Answer» What is chromatography ? For which type of mixture is it used?

Discussion

4932.	Question 7Can you store lemon pickle in an aluminium utensil? Explain.
Answer» Question 7 Can you store lemon pickle in an aluminium utensil? Explain.

Discussion

4933.	Milk turns sour at 40∘C three times as faster as 0∘C. Hence, Ea in the process of turning of milk sour is
Answer» Milk turns sour at $40^{\circ}$ C three times as faster as $0^{\circ}$ C. Hence, $E_{a}$ in the process of turning of milk sour is

Discussion

4934.	Why can a piece of chalk be broken easily into smaller pieces while a coal piece cannot be broken easily ?
Answer» Why can a piece of chalk be broken easily into smaller pieces while a coal piece cannot be broken easily ?

Discussion

4935.	Name the gas evolved when a metal reacts with water.
Answer» Name the gas evolved when a metal reacts with water.

Discussion

4936.	The amount of heat required to convert unit mass of liquid into its vapour state without a change in its temperature called is latent heat of ___
Answer» The amount of heat required to convert unit mass of liquid into its vapour state without a change in its temperature called is latent heat of ___

Discussion

4937.	100ml of gaseous benzene undergoes combustion in presence of oxygen. The required oxygen can be produced at STP from
Answer» 100ml of gaseous benzene undergoes combustion in presence of oxygen. The required oxygen can be produced at STP from

Discussion

4938.	Write the physical properties of metals S
Answer» Write the physical properties of metals S

4938.

Write the physical properties of metals S

Answer»

Write the physical properties of metals

S

Discussion

4939.	What is the difference between rapid combustion , spontaneous combustion and explosion?
Answer» What is the difference between rapid combustion , spontaneous combustion and explosion?

Discussion

4940.	Which of the following does not react directly with halogens to form halides
Answer» Which of the following does not react directly with halogens to form halides

Discussion

4941.	Identify the non-metal which exists in liquid state:
Answer» Identify the non-metal which exists in liquid state:

Discussion

4942.	(a) What are metals ? Name five metals.(b) What are non-metals ? Name five non-metals.
Answer» (a) What are metals ? Name five metals. (b) What are non-metals ? Name five non-metals.

4942.

(a) What are metals ? Name five metals.(b) What are non-metals ? Name five non-metals.

Answer»

(a) What are metals ? Name five metals.

(b) What are non-metals ? Name five non-metals.

Discussion

4943.	Write the correct words by rearranging letters in correct sequence - i) asgewe ii) ratsoncivnoe
Answer» Write the correct words by rearranging letters in correct sequence - i) asgewe ii) ratsoncivnoe

4943.

Write the correct words by rearranging letters in correct sequence - i) asgewe ii) ratsoncivnoe

Answer»

Write the correct words by rearranging letters in correct sequence -

i) asgewe ii) ratsoncivnoe

Discussion

4944.	Which of the following is not obtained from coal?
Answer» Which of the following is not obtained from coal?

Discussion

4945.	Name the petroleum product used to drive heavy vehicles.
Answer» Name the petroleum product used to drive heavy vehicles.

Discussion

4946.	The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 gms of carbon to form methane?
Answer» The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 gms of carbon to form methane?

Discussion

4947.	Name the chemicals used in soda fire extinguisher
Answer» Name the chemicals used in soda fire extinguisher

Discussion

4948.	Write 'true' or 'false' for the following statements : (a) An atom on the whole has a positive charge. (b) The maximum number of electrons in the first shell can be 8. (c) The central part of an atom is called nucleus.
Answer» Write 'true' or 'false' for the following statements : (a) An atom on the whole has a positive charge. (b) The maximum number of electrons in the first shell can be 8. (c) The central part of an atom is called nucleus.

4948.

Write 'true' or 'false' for the following statements : (a) An atom on the whole has a positive charge. (b) The maximum number of electrons in the first shell can be 8. (c) The central part of an atom is called nucleus.

Answer»

Write 'true' or 'false' for the following statements :

(a) An atom on the whole has a positive charge.

(b) The maximum number of electrons in the first shell can be 8.

(c) The central part of an atom is called nucleus.

Discussion

4949.	Liquids have ________ .
Answer» Liquids have ________ .

Discussion

4950.	Water reacts with ammonia and donates a proton but it accepts protons during the reaction with HCl. So water is __
Answer» Water reacts with ammonia and donates a proton but it accepts protons during the reaction with HCl. So water is __

Discussion

Explore topic-wise InterviewSolutions in .

What is meant by biodegradable and non-biodegradable materials ? Give examples of two non-biodegrable materials.

Which among the following non-metal combines with sodium to form common salt?

When a lead strip is inserted into a copper chloride solution then products will be ______

The maximum number of electrons that can occupy the shell K, L, M, N respectively are:

Who discovered atomic mass?

Who invented plastic

What will be the atomicity of: a) The molecule which we consume during respiration and this molecule is also released during photosynthesis. b) The red coloured element which we use in match boxes. c) The pale blue gas which forms a layer that absorbs sun's UV radiation.

Question 22 (i) Fill in the blanks (i) A polymer is a chain of many small units joined together which are called ___.

Which of the following property does not describe a compound?

Which among the following is a major water pollutant leading to death of aquatic species?

How are metals and non-metals different physically? [2 MARKS]

Protium differs from deuterium in

Choose the correct option based on the statements given below: Statement I:- The property of metals to get beaten into thin sheets is known as ductility. Statement II:- Platinum is the most ductile metal.

What is meant by spontaneous combustion ? Give one example of spontaneous combustion.

Incomplete burning might take place when -

Different colours are observed in different flames is due to

If empirical formula of a compound is C5H4 and the value of n is 2, then molecular formula of the compound is:

Which of these chemical reactions produce a gas?

________ gas released as a result of incomplete burning of fuels is a toxic gas.

Which zone of candle flame has the least and highest temperature? [2 MARKS]

Which of the following is/are the crystalline form/s of carbon?

The power generated in a windmill ___.

_______ + heat ⟶K2MnO4+MnO2+O2

Which separation process is used to recover both solute and solvent from a solid-liquid solution?

When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished. (a) Name the substance X. (b) How does this substance extinguish the fire ? (c) Name another susbtance which behaves like X.

Match the substances given in column A with their uses given in column B: AB(i)Gold (a)Thermometer(ii)Iron (b)Electric wires(iii)Aluminium (c)Wrapping food(iv)Carbon (d)Jewellery(v)Copper (e)Machinery(vi)Mercury (f)Fuel

How can we calculate the change in potential energy?

Which among the following statements is not true about an atom?

Is destructive distillation and pyrolysis the same?

Describe a flame

What is chromatography ? For which type of mixture is it used?

Question 7Can you store lemon pickle in an aluminium utensil? Explain.

Milk turns sour at 40∘C three times as faster as 0∘C. Hence, Ea in the process of turning of milk sour is

Why can a piece of chalk be broken easily into smaller pieces while a coal piece cannot be broken easily ?

Name the gas evolved when a metal reacts with water.

The amount of heat required to convert unit mass of liquid into its vapour state without a change in its temperature called is latent heat of ___

100ml of gaseous benzene undergoes combustion in presence of oxygen. The required oxygen can be produced at STP from

Write the physical properties of metals S

What is the difference between rapid combustion , spontaneous combustion and explosion?

Which of the following does not react directly with halogens to form halides

Identify the non-metal which exists in liquid state:

(a) What are metals ? Name five metals.(b) What are non-metals ? Name five non-metals.

Write the correct words by rearranging letters in correct sequence - i) asgewe ii) ratsoncivnoe

Which of the following is not obtained from coal?

Name the petroleum product used to drive heavy vehicles.

The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 gms of carbon to form methane?

Name the chemicals used in soda fire extinguisher

Write 'true' or 'false' for the following statements : (a) An atom on the whole has a positive charge. (b) The maximum number of electrons in the first shell can be 8. (c) The central part of an atom is called nucleus.

Liquids have ________ .

Water reacts with ammonia and donates a proton but it accepts protons during the reaction with HCl. So water is __