7248 + Interview Questions in Chemistry Page 118 InterviewSolution

5851.	What are green house gases. How are they responsible for global warming ?
Answer» What are green house gases. How are they responsible for global warming ?

Discussion

5852.	During electrolysis of carbonate (CO3−2), nitrate (NO3−1) and sulphate (SO4−2) based electrolyte, the gas that is formed at anode is ____________.
Answer» During electrolysis of carbonate ( ${C O_{3}}^{- 2}$ ), nitrate ( ${N O_{3}}^{- 1}$ ) and sulphate ( ${S O_{4}}^{- 2}$ ) based electrolyte, the gas that is formed at anode is ____________.

Discussion

5853.	Coal is a ___ combustible substance.
Answer» Coal is a ___ combustible substance.

Discussion

5854.	Which will cause a more severe burn, steam or boiling water at the same temperature?
Answer» Which will cause a more severe burn, steam or boiling water at the same temperature?

Discussion

5855.	Fill in the blanks : (a) Dalton said that _______________ could not be divided. (b) An ion which has a positive charge is called a _______________ (c) The outermost shell of an atom is known as _______________ (d) The _______________ of an atom is very hard and dense. (e) Neutrons are __________________ particles having mass equal to that of portons. (f) Isotopes are the atoms of __________________element having the __________________atomic number but __________________mass number.
Answer» Fill in the blanks : (a) Dalton said that _______________ could not be divided. (b) An ion which has a positive charge is called a _______________ (c) The outermost shell of an atom is known as _______________ (d) The _______________ of an atom is very hard and dense. (e) Neutrons are __________________ particles having mass equal to that of portons. (f) Isotopes are the atoms of __________________element having the __________________atomic number but __________________mass number.

5855.

Fill in the blanks : (a) Dalton said that _______ could not be divided. (b) An ion which has a positive charge is called a _ (c) The outermost shell of an atom is known as _ (d) The _ of an atom is very hard and dense. (e) Neutrons are particles having mass equal to that of portons. (f) Isotopes are the atoms of element having the atomic number but ______mass number.

Answer»

Fill in the blanks :

(a) Dalton said that _______________ could not be divided.

(b) An ion which has a positive charge is called a _______________

(c) The outermost shell of an atom is known as _______________

(d) The _______________ of an atom is very hard and dense.

(e) Neutrons are __________________ particles having mass equal to that of portons.

(f) Isotopes are the atoms of __________________element having the __________________atomic number but __________________mass number.

Discussion

5856.	CO2 extinguishers have ____________ as raw materials.
Answer» $C O_{2}$ extinguishers have ____________ as raw materials.

Discussion

5857.	Red litmus turns blue when the solution is:
Answer» Red litmus turns blue when the solution is:

Discussion

5858.	In Bohr’s model of an atom, negatively charged electrons travel around the positively charged nucleus in the orbital paths, similar to the path of the planets around the sun.
Answer» In Bohr’s model of an atom, negatively charged electrons travel around the positively charged nucleus in the orbital paths, similar to the path of the planets around the sun.

Discussion

5859.	From the given options, select the fuel that can be recommended in place of petrol and diesel to reduce toxic emissions?
Answer» From the given options, select the fuel that can be recommended in place of petrol and diesel to reduce toxic emissions?

Discussion

5860.	Meaning of atomic number
Answer» Meaning of atomic number

Discussion

5861.	Which of the following refers to the physical combination of two or more substances in which the identities of the individual components are retained?
Answer» Which of the following refers to the physical combination of two or more substances in which the identities of the individual components are retained?

Discussion

5862.	Let B = {1 orange, 1 pineapple, 1 banana, 1 apple} Let U = {1 orange, 1 apricot, 1 pineapple, 1 banana, 1 mango, 1 apple, 1 kiwifruit} B’ =
Answer» Let B = {1 orange, 1 pineapple, 1 banana, 1 apple} Let U = {1 orange, 1 apricot, 1 pineapple, 1 banana, 1 mango, 1 apple, 1 kiwifruit} B’ =

5862.

Let B = {1 orange, 1 pineapple, 1 banana, 1 apple} Let U = {1 orange, 1 apricot, 1 pineapple, 1 banana, 1 mango, 1 apple, 1 kiwifruit} B’ =

Answer»

Let B = {1 orange, 1 pineapple, 1 banana, 1 apple}

Let U = {1 orange, 1 apricot, 1 pineapple, 1 banana, 1 mango, 1 apple, 1 kiwifruit}

B’ =

Discussion

5863.	Why are the shell values represented by KLMN and not by any other letter?
Answer» Why are the shell values represented by KLMN and not by any other letter?

Discussion

5864.	Why are alloys considered mixture?
Answer» Why are alloys considered mixture?

Discussion

5865.	Can the sea water be purified with the process of distillation?
Answer» Can the sea water be purified with the process of distillation?

Discussion

5866.	In a battery
Answer» In a battery

Discussion

5867.	Question 3 Polycot is obtained by mixing (a) nylon and wool (b) polyester and wool (c) nylon and cotton (d) polyester and cotton
Answer» Question 3 Polycot is obtained by mixing (a) nylon and wool (b) polyester and wool (c) nylon and cotton (d) polyester and cotton

Discussion

5868.	Which of the following form the raw materials for synthesising plastics?
Answer» Which of the following form the raw materials for synthesising plastics?

Discussion

5869.	How many of the given natural fibres have polymers made up of amino-acids?
Answer» How many of the given natural fibres have polymers made up of amino-acids?

5869.

How many of the given natural fibres have polymers made up of amino-acids?

Answer»

How many of the given natural fibres have polymers made up of amino-acids?

Discussion

5870.	Calorific value of petrol is approximately :
Answer» Calorific value of petrol is approximately :

Discussion

5871.	Which one of the following methods is used to separate acetone from water?
Answer» Which one of the following methods is used to separate acetone from water?

Discussion

5872.	Barium Chloride+Aluminium Sulphate→Barium Sulphate+Aluminium Chloride Which of the following balanced chemical equation represent the above chemical reaction correctly?
Answer» $B a r i u m C h l o r i d e + A l u m i n i u m S u l p h a t e \to B a r i u m S u l p h a t e + A l u m i n i u m C h l o r i d e$ Which of the following balanced chemical equation represent the above chemical reaction correctly?

5872.

Barium Chloride+Aluminium Sulphate→Barium Sulphate+Aluminium Chloride Which of the following balanced chemical equation represent the above chemical reaction correctly?

Answer»

$B a r i u m C h l o r i d e + A l u m i n i u m S u l p h a t e \to B a r i u m S u l p h a t e + A l u m i n i u m C h l o r i d e$

Which of the following balanced chemical equation represent the above chemical reaction correctly?

Discussion

5873.	Identify the substance "X" used in an experiment on the factors favouring the rusting of iron?
Answer» Identify the substance "X" used in an experiment on the factors favouring the rusting of iron?

5873.

Identify the substance "X" used in an experiment on the factors favouring the rusting of iron?

Answer»

Identify the substance "X" used in an experiment on the factors favouring the rusting of iron?

Discussion

5874.	Identify the compound noun in the sentence. The fireflies in the glass jar were losing their glow.
Answer» Identify the compound noun in the sentence. The fireflies in the glass jar were losing their glow.

5874.

Identify the compound noun in the sentence. The fireflies in the glass jar were losing their glow.

Answer»

Identify the compound noun in the sentence.

The fireflies in the glass jar were losing their glow.

Discussion

5875.	In the electrolysis of molten sodium chloride, what is the yellow green gas formed?
Answer» In the electrolysis of molten sodium chloride, what is the yellow green gas formed?

Discussion

5876.	If you have been given a chance to be in the municipal body of your city, then what measures will you take to ensure the supply of clean water to all the inhabitants of the city?
Answer» If you have been given a chance to be in the municipal body of your city, then what measures will you take to ensure the supply of clean water to all the inhabitants of the city?

Discussion

5877.	How can we define evaporation on the basis of molecular motions
Answer» How can we define evaporation on the basis of molecular motions

Discussion

5878.	State which parts of speech are the underlined words. The cat sprang from the floor when the dog ran towards her. My village has many natural water springs.
Answer» State which parts of speech are the underlined words. The cat sprang from the floor when the dog ran towards her. My village has many natural water springs.

5878.

State which parts of speech are the underlined words. The cat sprang from the floor when the dog ran towards her. My village has many natural water springs.

Answer»

State which parts of speech are the underlined words.

The cat sprang from the floor when the dog ran towards her.

My village has many natural water springs.

Discussion

5879.	Water is added to the atmosphere by which of the following natural processes:-
Answer» Water is added to the atmosphere by which of the following natural processes:-

Discussion

5880.	Burning of petrol and spirit is the example of rapid combustion. Which one of the following do you think is a feature of rapid combustion?
Answer» Burning of petrol and spirit is the example of rapid combustion. Which one of the following do you think is a feature of rapid combustion?

Discussion

5881.	Which of the following units is/are used to describe power?
Answer» Which of the following units is/are used to describe power?

Discussion

5882.	Two boys were playing with the same ball on a level ground. One of the boys throws the ball on the third floor of the building which is at a height of 5 m and the other boy manages to throw on the fourth floor which is at a height of 7 m from the level ground. Then the ratio of the potential energy gained by the ball in both cases is:
Answer» Two boys were playing with the same ball on a level ground. One of the boys throws the ball on the third floor of the building which is at a height of 5 m and the other boy manages to throw on the fourth floor which is at a height of 7 m from the level ground. Then the ratio of the potential energy gained by the ball in both cases is:

Discussion

5883.	Apart from heat and fuel, which other component is essential to start a fire ?
Answer» Apart from heat and fuel, which other component is essential to start a fire ?

Discussion

5884.	An element burns in air to form an oxide.The aqueous solution of this oxide turns blue litmus paper red. State whether the element is a metal or non-metal.Name one such element.
Answer» An element burns in air to form an oxide.The aqueous solution of this oxide turns blue litmus paper red. State whether the element is a metal or non-metal.Name one such element.

Discussion

5885.	Based on atomicity, which type of molecule is water?
Answer» Based on atomicity, which type of molecule is water?

Discussion

5886.	It is easier to cook food in the pressure cookers because the boiling point of water increases with
Answer» It is easier to cook food in the pressure cookers because the boiling point of water increases with

Discussion

5887.	3 kg of coal liberates 6000 kJ of heat on combustion. Find its calorific value.2000
Answer» 3 kg of coal liberates 6000 kJ of heat on combustion. Find its calorific value. 2000

Discussion

5888.	Question 18 Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turnings in it?
Answer» Question 18 Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turnings in it?

Discussion

5889.	Which of the following is/are the effects of global warming?
Answer» Which of the following is/are the effects of global warming?

Discussion

5890.	Why is water useful to life on the earth? (i) It maintains ecological balance. (ii) It sustains life. (iii) It is necessary for respiration in aquatic organisms.
Answer» Why is water useful to life on the earth? (i) It maintains ecological balance. (ii) It sustains life. (iii) It is necessary for respiration in aquatic organisms.

Discussion

5891.	__________ and __________ are weak electrolytes.
Answer» __________ and __________ are weak electrolytes.

Discussion

5892.	Phosphorus is highly inflammable; in a matchstick, it ignites by:
Answer» Phosphorus is highly inflammable; in a matchstick, it ignites by:

Discussion

5893.	Which of the following metals should be chosen to react with CuSO4 solution to change its colour?
Answer» Which of the following metals should be chosen to react with $C u S O_{4}$ solution to change its colour?

Discussion

5894.	Question 24 Match the following for the flame of a candle.
Answer» Question 24 Match the following for the flame of a candle.

Discussion

5895.	The maximum quantity of a solid that can be dissolved in a solvent, at a given temperature, is known as __________.
Answer» The maximum quantity of a solid that can be dissolved in a solvent, at a given temperature, is known as __________.

Discussion

5896.	___________ cannot be further divided into simpler components. Whereas, ___________ is composed of two or more simple substances.
Answer» ___________ cannot be further divided into simpler components. Whereas, ___________ is composed of two or more simple substances.

Discussion

5897.	Graph between concentration of the product ‘x’ and time ‘t’ for A → B is given below: The graph between −d[A]dt and time will be of the type:
Answer» Graph between concentration of the product ‘x’ and time ‘t’ for A $\to$ B is given below: The graph between $- \frac{d [A]}{d t}$ and time will be of the type:

Discussion

5898.	Difference between 22 carat and 24 carat gold
Answer» Difference between 22 carat and 24 carat gold

Discussion

5899.	The major components of polyester are
Answer» The major components of polyester are

Discussion

5900.	Fractures in oil reservoirs:
Answer» Fractures in oil reservoirs:

Discussion

Explore topic-wise InterviewSolutions in .

What are green house gases. How are they responsible for global warming ?

During electrolysis of carbonate (CO3−2), nitrate (NO3−1) and sulphate (SO4−2) based electrolyte, the gas that is formed at anode is ____________.

Coal is a ___ combustible substance.

Which will cause a more severe burn, steam or boiling water at the same temperature?

CO2 extinguishers have ____________ as raw materials.

Red litmus turns blue when the solution is:

In Bohr’s model of an atom, negatively charged electrons travel around the positively charged nucleus in the orbital paths, similar to the path of the planets around the sun.

From the given options, select the fuel that can be recommended in place of petrol and diesel to reduce toxic emissions?

Meaning of atomic number

Which of the following refers to the physical combination of two or more substances in which the identities of the individual components are retained?

Let B = {1 orange, 1 pineapple, 1 banana, 1 apple} Let U = {1 orange, 1 apricot, 1 pineapple, 1 banana, 1 mango, 1 apple, 1 kiwifruit} B’ =

Why are the shell values represented by KLMN and not by any other letter?

Why are alloys considered mixture?

Can the sea water be purified with the process of distillation?

In a battery

Question 3 Polycot is obtained by mixing (a) nylon and wool (b) polyester and wool (c) nylon and cotton (d) polyester and cotton

Which of the following form the raw materials for synthesising plastics?

How many of the given natural fibres have polymers made up of amino-acids?

Calorific value of petrol is approximately :

Which one of the following methods is used to separate acetone from water?

Barium Chloride+Aluminium Sulphate→Barium Sulphate+Aluminium Chloride Which of the following balanced chemical equation represent the above chemical reaction correctly?

Identify the substance "X" used in an experiment on the factors favouring the rusting of iron?

Identify the compound noun in the sentence. The fireflies in the glass jar were losing their glow.

In the electrolysis of molten sodium chloride, what is the yellow green gas formed?

If you have been given a chance to be in the municipal body of your city, then what measures will you take to ensure the supply of clean water to all the inhabitants of the city?

How can we define evaporation on the basis of molecular motions

State which parts of speech are the underlined words. The cat sprang from the floor when the dog ran towards her. My village has many natural water springs.

Water is added to the atmosphere by which of the following natural processes:-

Burning of petrol and spirit is the example of rapid combustion. Which one of the following do you think is a feature of rapid combustion?

Which of the following units is/are used to describe power?

Apart from heat and fuel, which other component is essential to start a fire ?

An element burns in air to form an oxide.The aqueous solution of this oxide turns blue litmus paper red. State whether the element is a metal or non-metal.Name one such element.

Based on atomicity, which type of molecule is water?

It is easier to cook food in the pressure cookers because the boiling point of water increases with

3 kg of coal liberates 6000 kJ of heat on combustion. Find its calorific value.2000

Question 18 Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turnings in it?

Which of the following is/are the effects of global warming?

Why is water useful to life on the earth? (i) It maintains ecological balance. (ii) It sustains life. (iii) It is necessary for respiration in aquatic organisms.

__________ and __________ are weak electrolytes.

Phosphorus is highly inflammable; in a matchstick, it ignites by:

Which of the following metals should be chosen to react with CuSO4 solution to change its colour?

Question 24 Match the following for the flame of a candle.

The maximum quantity of a solid that can be dissolved in a solvent, at a given temperature, is known as __________.

___________ cannot be further divided into simpler components. Whereas, ___________ is composed of two or more simple substances.

Graph between concentration of the product ‘x’ and time ‘t’ for A → B is given below: The graph between −d[A]dt and time will be of the type:

Difference between 22 carat and 24 carat gold

The major components of polyester are

Fractures in oil reservoirs:

and are weak electrolytes.

_ cannot be further divided into simpler components. Whereas, _ is composed of two or more simple substances.