5083 + Interview Questions in Chemistry Page 3 InterviewSolution

101.	Apart from moisture and seed maturity, what are the other factors which influence seed germination?
Answer» Apart from moisture and seed maturity, what are the other factors which influence seed germination?

Discussion

102.	The fluoride which is most soluble in water is
Answer» The fluoride which is most soluble in water is

Discussion

103.	The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is :(1) heat the powder mixture at the base of the test tube using a blue flame throughout.(2) heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout.(3) heat the powder mixture at the top of the test tube using an orange flame throughout.(4) heat the iron fillings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.
Answer» The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is : (1) heat the powder mixture at the base of the test tube using a blue flame throughout. (2) heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout. (3) heat the powder mixture at the top of the test tube using an orange flame throughout. (4) heat the iron fillings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.

Discussion

104.	Why does dust settle again and again on the glass screen of a TV set?
Answer» Why does dust settle again and again on the glass screen of a TV set?

Discussion

105.	Why do we classify curdling of milk as slow change?
Answer» Why do we classify curdling of milk as slow change?

105.

Why do we classify curdling of milk as slow change?

Answer»

Why do we classify curdling of milk as slow change?

Discussion

106.	91. Whichis a basic salt ? A PbS B PbCO3 C PbSO4 D 2PbCO3.Pb(OH)2
Answer» 91. Whichis a basic salt ? A PbS B PbCO3 C PbSO4 D 2PbCO3.Pb(OH)2

Discussion

107.	What are water borne diseases and what are their symptoms?
Answer» What are water borne diseases and what are their symptoms?

Discussion

108.	Question 27Which of the following equations is the summary of photosynthesis?(a) 6CO2+12H2O→C6H12O6+6O2+6H2O(b) 6CO2+H2O+Sunlight→C6H12O6+O2+6H2O(c) 6CO2+12H2O+Chlorophyll+Sunlight→C6H12O6+6O2+6H2O(d) 6CO2+12H2O+Chlorophyll+Sunlight→C6H12O6+6CO2+6H2O
Answer» Question 27 Which of the following equations is the summary of photosynthesis? (a) $6 C O_{2} + 12 H_{2} O \to C_{6} H_{12} O_{6} + 6 O_{2} + 6 H_{2} O$ (b) $6 C O_{2} + H_{2} O + S u n l i g h t \to C_{6} H_{12} O_{6} + O_{2} + 6 H_{2} O$ (c) $6 C O_{2} + 12 H_{2} O + C h l o r o p h y l l + S u n l i g h t \to C_{6} H_{12} O_{6} + 6 O_{2} + 6 H_{2} O$ (d) $6 C O_{2} + 12 H_{2} O + C h l o r o p h y l l + S u n l i g h t \to C_{6} H_{12} O_{6} + 6 C O_{2} + 6 H_{2} O$

Discussion

109.	Following are questions :- State True or False 1) Mineral acids change to organic acids on addition of water. 2) Acidity of a base is the total number of hydrogen atoms present in one molecule of the base.
Answer» Following are questions :- State True or False 1) Mineral acids change to organic acids on addition of water. 2) Acidity of a base is the total number of hydrogen atoms present in one molecule of the base.

109.

Following are questions :- State True or False 1) Mineral acids change to organic acids on addition of water. 2) Acidity of a base is the total number of hydrogen atoms present in one molecule of the base.

Answer»

Following are questions :-

State True or False

1) Mineral acids change to organic acids on addition of water.

2) Acidity of a base is the total number of hydrogen atoms present in one molecule of the base.

Discussion

110.	A wire of about 2 km can be drawn from a gram of gold. This is because of the property called ______.
Answer» A wire of about 2 km can be drawn from a gram of gold. This is because of the property called ______.

Discussion

111.	Farmers add slaked lime (Calcium hydroxide) to the soil. Which of the following is the correct explanation for this act?
Answer» Farmers add slaked lime (Calcium hydroxide) to the soil. Which of the following is the correct explanation for this act?

Discussion

112.	A mixture of ammonium chloride and common salt is separated by the process of ______________. The volatile component in this case is ______________.
Answer» A mixture of ammonium chloride and common salt is separated by the process of ______________. The volatile component in this case is ______________.

Discussion

113.	Statement Some huts are forests Some forests are walls Some walls are nets Conclusions I. Some nets are huts II. Some nets are forests
Answer» Statement Some huts are forests Some forests are walls Some walls are nets Conclusions I. Some nets are huts II. Some nets are forests

113.

Statement Some huts are forests Some forests are walls Some walls are nets Conclusions I. Some nets are huts II. Some nets are forests

Answer»

Statement

Some huts are forests

Some forests are walls

Some walls are nets

Conclusions

I. Some nets are huts

II. Some nets are forests

Discussion

114.	Is soil alive
Answer» Is soil alive

Discussion

115.	10. Hydrogen( a moles) and Iodine( b moles) react to give 2x moles of the HI at equilibrium. The total number of moles at equilibrium is Calculate the heat of reaction at constant volume
Answer» 10. Hydrogen( a moles) and Iodine( b moles) react to give 2x moles of the HI at equilibrium. The total number of moles at equilibrium is Calculate the heat of reaction at constant volume

Discussion

116.	The closest distance of approach of an α - particle travelling with a velocity V towards a stationary nucleus is 'd'. For the closest distance to become d3 towards a stationary nucleus of double the charge, the velocity of projection of the α - particle has to be
Answer» The closest distance of approach of an $α$ - particle travelling with a velocity V towards a stationary nucleus is 'd'. For the closest distance to become $\frac{d}{3}$ towards a stationary nucleus of double the charge, the velocity of projection of the $α$ - particle has to be

Discussion

117.	why we always take argon as a near noble gas and what if we take another noble ga
Answer» why we always take argon as a near noble gas and what if we take another noble ga

Discussion

118.	which colour will be observed when magnese dioxide is fused with KOH in presence of O2? a)purple b)green c)orange d)red
Answer» which colour will be observed when magnese dioxide is fused with KOH in presence of O2? a)purple b)green c)orange d)red

Discussion

119.	Why is air called breath of life ? Enumerate functions of air or atmosphere.
Answer» Why is air called breath of life ? Enumerate functions of air or atmosphere.

Discussion

120.	1. The value of rate constant depends upon A-temperature B-concentration C-catalyst D-both a and c
Answer» 1. The value of rate constant depends upon A-temperature B-concentration C-catalyst D-both a and c

Discussion

121.	What is separation using vaporization?
Answer» What is separation using vaporization?

Discussion

122.	Why is the two O - O bond length in the ozone molecules equal?
Answer» Why is the two O - O bond length in the ozone molecules equal?

Discussion

123.	what is atomicity and v.d.?
Answer» what is atomicity and v.d.?

Discussion

124.	Define chemical bond. Which type of bond is present in the NaCl molecule?
Answer» Define chemical bond. Which type of bond is present in the NaCl molecule?

Discussion

125.	In a chemical formulae, the valency of anion is 4. Find out the valency of cation.
Answer» In a chemical formulae, the valency of anion is 4. Find out the valency of cation.

Discussion

126.	In a food chain, the energy is passed from green plants to which of the following?
Answer» In a food chain, the energy is passed from green plants to which of the following?

Discussion

127.	1 mole of hydrogen= ? Many grams
Answer» 1 mole of hydrogen= ? Many grams

Discussion

128.	Select the salts among the following compounds:
Answer» Select the salts among the following compounds:

128.

Select the salts among the following compounds:

Answer»

Select the salts among the following compounds:

Discussion

129.	if I add 1 electron, 1 neutron and 1 proton to a carbon atom will it become a nitrogen atom?
Answer» if I add 1 electron, 1 neutron and 1 proton to a carbon atom will it become a nitrogen atom?

Discussion

130.	The electron in a hydrogen atom makes transition from M shell to L shell. The ratio of magnitudes of initial to final centripetal acceleration of the electron is
Answer» The electron in a hydrogen atom makes transition from M shell to L shell. The ratio of magnitudes of initial to final centripetal acceleration of the electron is

Discussion

131.	20. What is the formula of a+b+c ?
Answer» 20. What is the formula of a+b+c ?

Discussion

132.	Among the following, which is the stronger fluorinating agent?
Answer» Among the following, which is the stronger fluorinating agent?

Discussion

133.	13. How to find out the formal charge of nitric acid?
Answer» 13. How to find out the formal charge of nitric acid?

Discussion

134.	Which elements show properties of both metals and non- metals?
Answer» Which elements show properties of both metals and non- metals?

Discussion

135.	What are the different types of inorganic and organic impurities generally present in sewage?
Answer» What are the different types of inorganic and organic impurities generally present in sewage?

Discussion

136.	Why entropy change is zero for a reversible process
Answer» Why entropy change is zero for a reversible process

Discussion

137.	Find the specific rate constant, if half life of a first-order reaction is 1386 seconds:
Answer» Find the specific rate constant, if half life of a first-order reaction is $1386 s e c o n d s$ :

Discussion

138.	Which of the following carbonate is thermally most unstable?BeCO3CaCO3K2CO3Rb2CO3
Answer» Which of the following carbonate is thermally most unstable? BeCO3 CaCO3 K2CO3 Rb2CO3

Discussion

139.	4.5 g of Aluminium is deposited at cathode from Al3+ solutions by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions in solution by the same quantity of electric charge will be:
Answer» $4.5 g$ of Aluminium is deposited at cathode from $A l^{3 +}$ solutions by a certain quantity of electric charge. The volume of hydrogen produced at STP from $H^{+}$ ions in solution by the same quantity of electric charge will be:

Discussion

140.	What are the characteristic properties of a pure substance? Why do we need them ?
Answer» What are the characteristic properties of a pure substance? Why do we need them ?

Discussion

141.	35. What is the origin of energy change in a chemical reaction?
Answer» 35. What is the origin of energy change in a chemical reaction?

Discussion

142.	Explain how industrial activities, agricultural activities, deforestation, construction work and increase in population decrease the water table? [5 MARKS]
Answer» Explain how industrial activities, agricultural activities, deforestation, construction work and increase in population decrease the water table? [5 MARKS]

Discussion

143.	Which of the following is an example of compound?
Answer» Which of the following is an example of compound?

Discussion

144.	What is meant by depletion of water.
Answer» What is meant by depletion of water.

Discussion

145.	The rate of increase in human population and the rate of species extinction are ________ .
Answer» The rate of increase in human population and the rate of species extinction are ________ .

Discussion

146.	Please give me a video in which i can get what is the reaction with hydrogen peroxide and potassium permagnate
Answer» Please give me a video in which i can get what is the reaction with hydrogen peroxide and potassium permagnate

Discussion

147.	In which part of the sewage treatment process is the decomposer bacteria present in the waste recycled?
Answer» In which part of the sewage treatment process is the decomposer bacteria present in the waste recycled?

Discussion

148.	Pick out the personal pronoun from the sentence. The drapes used by him to decorate the hall were of low quality.
Answer» Pick out the personal pronoun from the sentence. The drapes used by him to decorate the hall were of low quality.

148.

Pick out the personal pronoun from the sentence. The drapes used by him to decorate the hall were of low quality.

Answer»

Pick out the personal pronoun from the sentence.

The drapes used by him to decorate the hall were of low quality.

Discussion

149.	57. The number of molecules in 4.25g of ammonia is approximately
Answer» 57. The number of molecules in 4.25g of ammonia is approximately

Discussion

150.	103. Half lives for alpha and beta emission of a radioactive material are 8 yrs and 24 yrs respectively. When material decays giving alpha and beta emission simultaneously then time in which 7/8th of the material decays is
Answer» 103. Half lives for alpha and beta emission of a radioactive material are 8 yrs and 24 yrs respectively. When material decays giving alpha and beta emission simultaneously then time in which 7/8th of the material decays is

Discussion

Explore topic-wise InterviewSolutions in .

Apart from moisture and seed maturity, what are the other factors which influence seed germination?

The fluoride which is most soluble in water is

Why does dust settle again and again on the glass screen of a TV set?

Why do we classify curdling of milk as slow change?

91. Whichis a basic salt ? A PbS B PbCO3 C PbSO4 D 2PbCO3.Pb(OH)2

What are water borne diseases and what are their symptoms?

Question 27Which of the following equations is the summary of photosynthesis?(a) 6CO2+12H2O→C6H12O6+6O2+6H2O(b) 6CO2+H2O+Sunlight→C6H12O6+O2+6H2O(c) 6CO2+12H2O+Chlorophyll+Sunlight→C6H12O6+6O2+6H2O(d) 6CO2+12H2O+Chlorophyll+Sunlight→C6H12O6+6CO2+6H2O

Following are questions :- State True or False 1) Mineral acids change to organic acids on addition of water. 2) Acidity of a base is the total number of hydrogen atoms present in one molecule of the base.

A wire of about 2 km can be drawn from a gram of gold. This is because of the property called ______.

Farmers add slaked lime (Calcium hydroxide) to the soil. Which of the following is the correct explanation for this act?

A mixture of ammonium chloride and common salt is separated by the process of ______________. The volatile component in this case is ______________.

Statement Some huts are forests Some forests are walls Some walls are nets Conclusions I. Some nets are huts II. Some nets are forests

Is soil alive

10. Hydrogen( a moles) and Iodine( b moles) react to give 2x moles of the HI at equilibrium. The total number of moles at equilibrium is Calculate the heat of reaction at constant volume

The closest distance of approach of an α - particle travelling with a velocity V towards a stationary nucleus is 'd'. For the closest distance to become d3 towards a stationary nucleus of double the charge, the velocity of projection of the α - particle has to be

why we always take argon as a near noble gas and what if we take another noble ga

which colour will be observed when magnese dioxide is fused with KOH in presence of O2? a)purple b)green c)orange d)red

Why is air called breath of life ? Enumerate functions of air or atmosphere.

1. The value of rate constant depends upon A-temperature B-concentration C-catalyst D-both a and c

What is separation using vaporization?

Why is the two O - O bond length in the ozone molecules equal?

what is atomicity and v.d.?

Define chemical bond. Which type of bond is present in the NaCl molecule?

In a chemical formulae, the valency of anion is 4. Find out the valency of cation.

In a food chain, the energy is passed from green plants to which of the following?

1 mole of hydrogen= ? Many grams

Select the salts among the following compounds:

if I add 1 electron, 1 neutron and 1 proton to a carbon atom will it become a nitrogen atom?

The electron in a hydrogen atom makes transition from M shell to L shell. The ratio of magnitudes of initial to final centripetal acceleration of the electron is

20. What is the formula of a+b+c ?

Among the following, which is the stronger fluorinating agent?

13. How to find out the formal charge of nitric acid?

Which elements show properties of both metals and non- metals?

What are the different types of inorganic and organic impurities generally present in sewage?​

Why entropy change is zero for a reversible process

Find the specific rate constant, if half life of a first-order reaction is 1386 seconds:

Which of the following carbonate is thermally most unstable?BeCO3CaCO3K2CO3Rb2CO3

4.5 g of Aluminium is deposited at cathode from Al3+ solutions by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions in solution by the same quantity of electric charge will be:

What are the characteristic properties of a pure substance? Why do we need them ?

35. What is the origin of energy change in a chemical reaction?

Explain how industrial activities, agricultural activities, deforestation, construction work and increase in population decrease the water table? [5 MARKS]

Which of the following is an example of compound?

What is meant by depletion of water.

The rate of increase in human population and the rate of species extinction are ________ .

Please give me a video in which i can get what is the reaction with hydrogen peroxide and potassium permagnate

In which part of the sewage treatment process is the decomposer bacteria present in the waste recycled?

Pick out the personal pronoun from the sentence. The drapes used by him to decorate the hall were of low quality.

57. The number of molecules in 4.25g of ammonia is approximately

103. Half lives for alpha and beta emission of a radioactive material are 8 yrs and 24 yrs respectively. When material decays giving alpha and beta emission simultaneously then time in which 7/8th of the material decays is

A mixture of ammonium chloride and common salt is separated by the process of . The volatile component in this case is .

What are the different types of inorganic and organic impurities generally present in sewage?