5083 + Interview Questions in Chemistry Page 19 InterviewSolution

901.	Choose the correct option for the following given statements; Statement 1: Carbon monoxide is a harmful air pollutant. Statement 2: Carbon monoxide increases the oxygen absorption capacity of the blood.
Answer» Choose the correct option for the following given statements; Statement 1: Carbon monoxide is a harmful air pollutant. Statement 2: Carbon monoxide increases the oxygen absorption capacity of the blood.

901.

Choose the correct option for the following given statements; Statement 1: Carbon monoxide is a harmful air pollutant. Statement 2: Carbon monoxide increases the oxygen absorption capacity of the blood.

Answer»

Choose the correct option for the following given statements;

Statement 1: Carbon monoxide is a harmful air pollutant.

Statement 2: Carbon monoxide increases the oxygen absorption capacity of the blood.

902.	Are both galvanization and galvanisation correct?
Answer» Are both galvanization and galvanisation correct?

Discussion

903.	E∘ for the cell, Zn(s)\|Zn2+(aq)\|\|Cu2+(aq)\|Cu(s) is 1.10 V at 25∘C. The equilibrium constant for the reaction, Zn(s)+Cu2+(aq)→Cu(s)+Zn2+(aq) is 1.94×10x. The value of x is
Answer» $E^{\circ}$ for the cell, ${Zn(s)\|Zn}^{2 +} (aq) \| \| {Cu}^{2 +} (aq)\|Cu(s)$ is $1.10$ V at $25^{\circ} C$ . The equilibrium constant for the reaction, $Zn(s) + {Cu}^{2 +} (aq) \to Cu(s) + {Zn}^{2 +} (aq)$ is $1.94 \times 10^{x}$ . The value of $x$ is

Discussion

904.	Which of the following human activities is the leading cause of extinction worldwide?
Answer» Which of the following human activities is the leading cause of extinction worldwide?

Discussion

905.	Which of the following exhibits physical change?
Answer» Which of the following exhibits physical change?

Discussion

906.	A substance is said to be sonorous if it _________.
Answer» A substance is said to be sonorous if it _________.

Discussion

907.	calculate the equilibrium constant for the reaction at 25^°C Cu(s) + 2Ag+(aq)=Cu2+(aq) + 2Ag (s) Given E^°cell =-0.46 V.
Answer» calculate the equilibrium constant for the reaction at 25^°C Cu(s) + 2Ag+(aq)=Cu2+(aq) + 2Ag (s) Given E^°cell =-0.46 V.

Discussion

908.	What is the use of condenser?
Answer» What is the use of condenser?

Discussion

909.	Question 01.What happens when a solution of an acid is mixed with a solution of a base in a test tube ?(i) The temperature of the solution increases.(ii) The temperature of the solution decreases.(iii) The temperature of the solution remains the same.(iv) Salt formation takes place. (i) only (i) and (iii) (ii) and (iii) (i) and (iv)
Answer» Question 01. What happens when a solution of an acid is mixed with a solution of a base in a test tube ? (i) The temperature of the solution increases. (ii) The temperature of the solution decreases. (iii) The temperature of the solution remains the same. (iv) Salt formation takes place. (i) only (i) and (iii) (ii) and (iii) (i) and (iv)

909.

Question 01.What happens when a solution of an acid is mixed with a solution of a base in a test tube ?(i) The temperature of the solution increases.(ii) The temperature of the solution decreases.(iii) The temperature of the solution remains the same.(iv) Salt formation takes place. (i) only (i) and (iii) (ii) and (iii) (i) and (iv)

Answer»

Question 01.

What happens when a solution of an acid is mixed with a solution of a base in a test tube ?

(i) The temperature of the solution increases.

(ii) The temperature of the solution decreases.

(iii) The temperature of the solution remains the same.

(iv) Salt formation takes place.

(i) only

(i) and (iii)

(ii) and (iii)

(i) and (iv)

Discussion

910.	Classify the following substance into elements and compounds :(a) Water, (b) Iron, (c) Common Salt, (d) Benzene, (e) Glucose, (f) Helium, (g) Copper, (h) Oxygen, (i) Marble
Answer» Classify the following substance into elements and compounds : (a) Water, (b) Iron, (c) Common Salt, (d) Benzene, (e) Glucose, (f) Helium, (g) Copper, (h) Oxygen, (i) Marble

Discussion

911.	In iodination ; for preparation of iodomethanecompound used is(1) HIO3(3) Both (1) & (2)(2) HgO(4) H
Answer» In iodination ; for preparation of iodomethanecompound used is(1) HIO3(3) Both (1) & (2)(2) HgO(4) H

Discussion

912.	what is synthetic detergents?
Answer» what is synthetic detergents?

Discussion

913.	Calamine solution is applied on the skin when an ant bites because the solution is ___. (acidic or basic)
Answer» Calamine solution is applied on the skin when an ant bites because the solution is ___. (acidic or basic)

Discussion

914.	Calculate the number of electrons present in a pure sample of H2SO4 containing 8 moles of O-atoms?
Answer» Calculate the number of electrons present in a pure sample of $H_{2} S O_{4}$ containing $8$ moles of $O$ -atoms?

Discussion

915.	How much heat is released when a strong base reacts with a strong acid?
Answer» How much heat is released when a strong base reacts with a strong acid?

Discussion

916.	vapour pressure of water is 360 mm of Hg, how much urea should be added to 200ml water to reduce its vapour pressure by 0.5%?
Answer» vapour pressure of water is 360 mm of Hg, how much urea should be added to 200ml water to reduce its vapour pressure by 0.5%?

Discussion

917.	Question 18Which of the following are combination reactions?(i) 2KClO3Heat→2KCl+3O2(ii) MgO+H2O→Mg(OH)2(iii) 4Al+3O2→2Al2O3(iv) Zn+FeSO4→ZnSO4+Fe(a) (i) and (iii)(b) (iii) and (iv)(c) (ii) and (iv)(d) (ii) and (iii)
Answer» Question 18 Which of the following are combination reactions? (i) $2 {KClO}_{3} Heat \to 2 KCl + 3 O_{2}$ (ii) $MgO + H_{2} O \to {Mg(OH)}_{2}$ (iii) $4 Al + 3 O_{2} \to 2 {Al}_{2} O_{3}$ (iv) $Zn + {FeSO}_{4} \to {ZnSO}_{4} + Fe$ (a) (i) and (iii) (b) (iii) and (iv) (c) (ii) and (iv) (d) (ii) and (iii)

Discussion

918.	Which among the following equation gives the correct relation between resistance (R), length of conductor (L), area of the cross-section of the conductor (A) and resistivity(ρ)?
Answer» Which among the following equation gives the correct relation between resistance $(R)$ , length of conductor $(L)$ , area of the cross-section of the conductor $(A)$ and resistivity $(ρ)$ ?

Discussion

919.	What will happen to the iron if it is completely immersed in water, with water having a layer of oil on its surface to avoid the interaction with air?
Answer» What will happen to the iron if it is completely immersed in water, with water having a layer of oil on its surface to avoid the interaction with air?

Discussion

920.	State two characteristics of matter demonstrated by:Diffusion Brownian motion
Answer» State two characteristics of matter demonstrated by: Diffusion Brownian motion

920.

State two characteristics of matter demonstrated by:Diffusion Brownian motion

Answer»

State two characteristics of matter demonstrated by:

Diffusion
Brownian motion

Discussion

921.	Name the gas which burns with a pop sound. __
Answer» Name the gas which burns with a pop sound. __

Discussion

922.	Calculate the emf of the following cell at 298 K.Zn(s)∣Zn2+(aq, 0.1 M)∥Ag+(aq, 0.01 M)∣ Ag(s)Given: E0Zn2+/Zn = −0.76 VE0Ag+/Ag =+0.80 V
Answer» Calculate the emf of the following cell at $298 K$ . $Z n (s) ∣ Z n^{2 +} (a q, 0.1 M) ∥ A g^{+} (a q, 0.01 M) ∣ A g (s)$ Given: $E_{Z n^{2 +} / Z n}^{0} = - 0.76 V$ $E_{A g^{+} / A g}^{0} = + 0.80 V$

Discussion

923.	What are synthetic indicators? Give two examples of synthetic indicators.
Answer» What are synthetic indicators? Give two examples of synthetic indicators.

Discussion

924.	Find the odd-man-out. (a) HNO3, H2SO4, HCl, Na2CO3 (b) MgO, CaO, H2O, Na2O (c) NaHCO3, NaOH, NH4OH, CH3COOH (d) NaCl, C12H22O11, KCl, CuSO4 (e) HCl, H2SO4, HNO3, CH3COOH
Answer» Find the odd-man-out. (a) HNO₃, H₂SO₄, HCl, Na₂CO₃ (b) MgO, CaO, H₂O, Na₂O (c) NaHCO₃, NaOH, NH₄OH, CH₃COOH (d) NaCl, C₁₂H₂₂O₁₁, KCl, CuSO₄ (e) HCl, H₂SO₄, HNO₃, CH₃COOH

924.

Find the odd-man-out. (a) HNO3, H2SO4, HCl, Na2CO3 (b) MgO, CaO, H2O, Na2O (c) NaHCO3, NaOH, NH4OH, CH3COOH (d) NaCl, C12H22O11, KCl, CuSO4 (e) HCl, H2SO4, HNO3, CH3COOH

Answer»

Find the odd-man-out.

(a) HNO₃, H₂SO₄, HCl, Na₂CO₃

(b) MgO, CaO, H₂O, Na₂O

(c) NaHCO₃, NaOH, NH₄OH, CH₃COOH

(d) NaCl, C₁₂H₂₂O₁₁, KCl, CuSO₄

(e) HCl, H₂SO₄, HNO₃, CH₃COOH

Discussion

925.	When 96.5 coulomb of electricity is passed throught a solution of AgNO3, the amount of Ag deposited is:
Answer» When $96.5$ coulomb of electricity is passed throught a solution of $A g N O_{3}$ , the amount of $A g$ deposited is:

Discussion

926.	You live near a river. You notice that your neighbours throw all their garbage into the river. They justify their action by saying that the garbage they throw is very little as compared to the dirt thrown into the river by the surrounding factories. Is this thinking correct? Explain.
Answer» You live near a river. You notice that your neighbours throw all their garbage into the river. They justify their action by saying that the garbage they throw is very little as compared to the dirt thrown into the river by the surrounding factories. Is this thinking correct? Explain.

Discussion

927.	What happens to salad brinjal of brinjal if it is exposed to air ? explain the reason.
Answer» What happens to salad brinjal of brinjal if it is exposed to air ? explain the reason.

Discussion

928.	What type of water is responsible for mineral build up?
Answer» What type of water is responsible for mineral build up?

Discussion

929.	If the formula of metal nitride is MN, the formula of the metal sulphate is?
Answer» If the formula of metal nitride is MN, the formula of the metal sulphate is?

Discussion

930.	What is an ionic bond?
Answer» What is an ionic bond?

Discussion

931.	The electrolytic decomposition of water gives hydrogen and oxygen in the ratio of
Answer» The electrolytic decomposition of water gives hydrogen and oxygen in the ratio of

Discussion

932.	Formation of water from hydrogen and oxygen is an example of ____________ reaction
Answer» Formation of water from hydrogen and oxygen is an example of ____________ reaction

Discussion

933.	The temperature coefficient of a reaction is 2. The rate of this reaction on raising temperature by 25 K shall increase by how many times?
Answer» The temperature coefficient of a reaction is 2. The rate of this reaction on raising temperature by 25 K shall increase by how many times?

Discussion

934.	How is water purified at a water purification plant?
Answer» How is water purified at a water purification plant?

Discussion

935.	What are the ways of representing a chemical reaction?
Answer» What are the ways of representing a chemical reaction?

Discussion

936.	Which of the following change cannot be reversed?(a) Blowing of a balloon(b) Folding a paper to make a toy aeroplane.(c) Rolling a ball of dough to make roti(d) Baking cake in an oven(e) Drying a wet cloth(f) Making biogas from cow dung.(g) Burning of a candle.
Answer» Which of the following change cannot be reversed? (a) Blowing of a balloon (b) Folding a paper to make a toy aeroplane. (c) Rolling a ball of dough to make roti (d) Baking cake in an oven (e) Drying a wet cloth (f) Making biogas from cow dung. (g) Burning of a candle.

Discussion

937.	33.Prove that the density of Cl relative to air is 2.44 .
Answer» 33.Prove that the density of Cl relative to air is 2.44 .

Discussion

938.	How many atoms are present in one molecule of ozone?
Answer» How many atoms are present in one molecule of ozone?

Discussion

939.	Question 10One of the following processes is not a step involved in the water-cycle operating in nature(a) evaporation(b) transpiration(c) precipitation(d) photosynthesis
Answer» Question 10 One of the following processes is not a step involved in the water-cycle operating in nature (a) evaporation (b) transpiration (c) precipitation (d) photosynthesis

Discussion

940.	Arrange the following activities in the order of the speed in which they take place. (i) Movement of mimosa when it is touched. (ii) Movement of sunflower in response to day and night. (iii) Growth – related movements of plants.
Answer» Arrange the following activities in the order of the speed in which they take place. (i) Movement of mimosa when it is touched. (ii) Movement of sunflower in response to day and night. (iii) Growth – related movements of plants.

Discussion

941.	Density = _____
Answer» Density = _____

Discussion

942.	Question 1 (iv)Write down the formulae of:(iv) Magnesium hydroxide
Answer» Question 1 (iv) Write down the formulae of: (iv) Magnesium hydroxide

Discussion

943.	What ismeaning of antiparallel?
Answer» What ismeaning of antiparallel?

Discussion

944.	Name the source from which litmus solution is obtained. What is the use of this solution?
Answer» Name the source from which litmus solution is obtained. What is the use of this solution?

Discussion

945.	34. An iron compound yielded C = 64.4%,H = 5.5%, amd Fe =29.9%.The simple formula of the compound is A C10H10Fe B C9H10Fe C C10H9Fe D C9H9Fe
Answer» 34. An iron compound yielded C = 64.4%,H = 5.5%, amd Fe =29.9%.The simple formula of the compound is A C10H10Fe B C9H10Fe C C10H9Fe D C9H9Fe

Discussion

946.	The colour of the pH paper strip turned red when it was dipped into a sample. The sample could be :(1) dilute sodium bicarbonate solution(2) tap water (3) dilute sodium hydroxide solution (4) dilute hydrochloric acid
Answer» The colour of the pH paper strip turned red when it was dipped into a sample. The sample could be : (1) dilute sodium bicarbonate solution (2) tap water (3) dilute sodium hydroxide solution (4) dilute hydrochloric acid

Discussion

947.	Which of the following elements is used for producing microchips?
Answer» Which of the following elements is used for producing microchips?

Discussion

948.	The chemical formula of Barium chloride and Aluminum sulphate are ______ and ______ respectively.
Answer» The chemical formula of Barium chloride and Aluminum sulphate are ______ and ______ respectively.

Discussion

949.	What is mean by galvanisation and alloying process?
Answer» What is mean by galvanisation and alloying process?

Discussion

950.	In what way is sea water useful to us?
Answer» In what way is sea water useful to us?

950.

In what way is sea water useful to us?

Answer»

In what way is sea water useful to us?

Discussion

Explore topic-wise InterviewSolutions in .

Choose the correct option for the following given statements; Statement 1: Carbon monoxide is a harmful air pollutant. Statement 2: Carbon monoxide increases the oxygen absorption capacity of the blood.

Are both galvanization and galvanisation correct?

E∘ for the cell, Zn(s)|Zn2+(aq)||Cu2+(aq)|Cu(s) is 1.10 V at 25∘C. The equilibrium constant for the reaction, Zn(s)+Cu2+(aq)→Cu(s)+Zn2+(aq) is 1.94×10x. The value of x is

Which of the following human activities is the leading cause of extinction worldwide?

Which of the following exhibits physical change?

A substance is said to be sonorous if it _________.

calculate the equilibrium constant for the reaction at 25^°C Cu(s) + 2Ag+(aq)=Cu2+(aq) + 2Ag (s) Given E^°cell =-0.46 V.

What is the use of condenser?

Classify the following substance into elements and compounds :(a) Water, (b) Iron, (c) Common Salt, (d) Benzene, (e) Glucose, (f) Helium, (g) Copper, (h) Oxygen, (i) Marble

In iodination ; for preparation of iodomethanecompound used is(1) HIO3(3) Both (1) & (2)(2) HgO(4) H

what is synthetic detergents?

Calamine solution is applied on the skin when an ant bites because the solution is ___. (acidic or basic)

Calculate the number of electrons present in a pure sample of H2SO4 containing 8 moles of O-atoms?

How much heat is released when a strong base reacts with a strong acid?

vapour pressure of water is 360 mm of Hg, how much urea should be added to 200ml water to reduce its vapour pressure by 0.5%?

Question 18Which of the following are combination reactions?(i) 2KClO3Heat→2KCl+3O2(ii) MgO+H2O→Mg(OH)2(iii) 4Al+3O2→2Al2O3(iv) Zn+FeSO4→ZnSO4+Fe(a) (i) and (iii)(b) (iii) and (iv)(c) (ii) and (iv)(d) (ii) and (iii)

Which among the following equation gives the correct relation between resistance (R), length of conductor (L), area of the cross-section of the conductor (A) and resistivity(ρ)?

What will happen to the iron if it is completely immersed in water, with water having a layer of oil on its surface to avoid the interaction with air?

State two characteristics of matter demonstrated by:Diffusion Brownian motion

Name the gas which burns with a pop sound. __

Calculate the emf of the following cell at 298 K.Zn(s)∣Zn2+(aq, 0.1 M)∥Ag+(aq, 0.01 M)∣ Ag(s)Given: E0Zn2+/Zn = −0.76 VE0Ag+/Ag =+0.80 V

What are synthetic indicators? Give two examples of synthetic indicators.

Find the odd-man-out. (a) HNO3, H2SO4, HCl, Na2CO3 (b) MgO, CaO, H2O, Na2O (c) NaHCO3, NaOH, NH4OH, CH3COOH (d) NaCl, C12H22O11, KCl, CuSO4 (e) HCl, H2SO4, HNO3, CH3COOH

When 96.5 coulomb of electricity is passed throught a solution of AgNO3, the amount of Ag deposited is:

You live near a river. You notice that your neighbours throw all their garbage into the river. They justify their action by saying that the garbage they throw is very little as compared to the dirt thrown into the river by the surrounding factories. Is this thinking correct? Explain.

What happens to salad brinjal of brinjal if it is exposed to air ? explain the reason.

What type of water is responsible for mineral build up?

If the formula of metal nitride is MN, the formula of the metal sulphate is?

What is an ionic bond?

The electrolytic decomposition of water gives hydrogen and oxygen in the ratio of

Formation of water from hydrogen and oxygen is an example of ____________ reaction

The temperature coefficient of a reaction is 2. The rate of this reaction on raising temperature by 25 K shall increase by how many times?

How is water purified at a water purification plant?

What are the ways of representing a chemical reaction?

Which of the following change cannot be reversed?(a) Blowing of a balloon(b) Folding a paper to make a toy aeroplane.(c) Rolling a ball of dough to make roti(d) Baking cake in an oven(e) Drying a wet cloth(f) Making biogas from cow dung.(g) Burning of a candle.

33.Prove that the density of Cl relative to air is 2.44 .

How many atoms are present in one molecule of ozone?

Question 10One of the following processes is not a step involved in the water-cycle operating in nature(a) evaporation(b) transpiration(c) precipitation(d) photosynthesis

Arrange the following activities in the order of the speed in which they take place. (i) Movement of mimosa when it is touched. (ii) Movement of sunflower in response to day and night. (iii) Growth – related movements of plants.

Density = _____

Question 1 (iv)Write down the formulae of:(iv) Magnesium hydroxide

What ismeaning of antiparallel?

Name the source from which litmus solution is obtained. What is the use of this solution?

34. An iron compound yielded C = 64.4%,H = 5.5%, amd Fe =29.9%.The simple formula of the compound is A C10H10Fe B C9H10Fe C C10H9Fe D C9H9Fe

The colour of the pH paper strip turned red when it was dipped into a sample. The sample could be :(1) dilute sodium bicarbonate solution(2) tap water (3) dilute sodium hydroxide solution (4) dilute hydrochloric acid

Which of the following elements is used for producing microchips?

The chemical formula of Barium chloride and Aluminum sulphate are ______ and ______ respectively.

What is mean by galvanisation and alloying process?

In what way is sea water useful to us?

The chemical formula of Barium chloride and Aluminum sulphate are and respectively.