5083 + Interview Questions in Chemistry Page 53 InterviewSolution

2601.	kindly explain rock salt structure
Answer» kindly explain rock salt structure

Discussion

2602.	Which of the following has the strongest inter-particle force at the room temperature?
Answer» Which of the following has the strongest inter-particle force at the room temperature?

Discussion

2603.	What is alkali?
Answer» What is alkali?

Discussion

2604.	In the formula CaBr2 what does Ca stand for and what is its valency?
Answer» In the formula $C a B r_{2}$ what does Ca stand for and what is its valency?

Discussion

2605.	even though carbon has 2 unpaired electrons ,whybits valencybis 4 instead of 2.Do carbon also can have variable valency
Answer» even though carbon has 2 unpaired electrons ,whybits valencybis 4 instead of 2.Do carbon also can have variable valency

Discussion

2606.	Why does the poet say the squirrel “wore a question mark for the tail”? Draw a quirrel, or find a picture of a squirrel sitting on the ground. How would you describe its tail?
Answer» Why does the poet say the squirrel “wore a question mark for the tail”? Draw a quirrel, or find a picture of a squirrel sitting on the ground. How would you describe its tail?

Discussion

2607.	Why do we need pure substance for our use?
Answer» Why do we need pure substance for our use?

Discussion

2608.	Define intermolecular force of attraction.
Answer» Define intermolecular force of attraction.

Discussion

2609.	Explain the following statement: Disgestion is a chemical change.
Answer» Explain the following statement: Disgestion is a chemical change.

Discussion

2610.	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

2611.	Bharath heated a closed vessel full of water. After some time he observed that the water started boiling and after some more time there was no water in the vessel. This is an example of___change.
Answer» Bharath heated a closed vessel full of water. After some time he observed that the water started boiling and after some more time there was no water in the vessel. This is an example of___change.

Discussion

2612.	What can we conclude from burning of candle in respect to physical and chemical changes? [3 MARKS]
Answer» What can we conclude from burning of candle in respect to physical and chemical changes? [3 MARKS]

Discussion

2613.	An element X forms the following compounds with hydrogen, carbon and oxygen:H2X, CX2, XO2, XO3State the three valencies of element X which are illustrated by these compounds.
Answer» An element X forms the following compounds with hydrogen, carbon and oxygen: H₂X, CX₂, XO₂, XO₃ State the three valencies of element X which are illustrated by these compounds.

Discussion

2614.	Name the change involved in the burning of coal in blast furnace.
Answer» Name the change involved in the burning of coal in blast furnace.

Discussion

2615.	Question 10A pond contains clean water. Which of the following activities will produce least pollution of water?(a) washing clothes in the pond(b) animals bathing in the pond(c) washing motor vehicles in the pond(d) swimming in the pond
Answer» Question 10 A pond contains clean water. Which of the following activities will produce least pollution of water? (a) washing clothes in the pond (b) animals bathing in the pond (c) washing motor vehicles in the pond (d) swimming in the pond

Discussion

2616.	How can Rutherford says that electrons revolve around the nucleus
Answer» How can Rutherford says that electrons revolve around the nucleus

Discussion

2617.	Which is the correct represenation for standard reduction potential of the given half reaction? Pb2+(aq)+2e−⇌Pb(s)
Answer» Which is the correct represenation for standard reduction potential of the given half reaction? $P b^{2 +} (a q) + 2 e^{-} ⇌ P b (s)$

Discussion

2618.	Where are the wool yielding animal called llama and alpaca found
Answer» Where are the wool yielding animal called llama and alpaca found

Discussion

2619.	When silk is burnt they smell like burning hair . however when cotton is burnt they smell like burning paper. Why?
Answer» When silk is burnt they smell like burning hair . however when cotton is burnt they smell like burning paper. Why?

Discussion

2620.	A+B→C+DRate law for the given reaction is given as k[A][B]. If B is taken in excess then the rate of reaction will become: Here,k is the rate constant.k′=k[B]
Answer» $A + B \to C + D$ Rate law for the given reaction is given as $k [A] [B]$ . If B is taken in excess then the rate of reaction will become: Here, $k$ is the rate constant. $k^{'} = k [B]$

Discussion

2621.	The middle region has limited supply of Oxygen and partial burning takes place there. Due to this -
Answer» The middle region has limited supply of Oxygen and partial burning takes place there. Due to this -

Discussion

2622.	An aqueous solution of NaCl on electrolysis gives H2(g),Cl2(g) and NaOH according to the reaction :2Cl−(aq)+2H2O(l)⟶2OH−(aq)+H2(g)+Cl2(g)A direct current of 25 amperes with a current efficiency of 62% is passed. Calculate the time required to produce 1 kg Cl2(g).
Answer» An aqueous solution of NaCl on electrolysis gives $H_{2} (g), C l_{2} (g)$ and $N a O H$ according to the reaction : $2 C l^{-} (a q) + 2 H_{2} O (l) ⟶ 2 O H^{-} (a q) + H_{2} (g) + C l_{2} (g)$ A direct current of 25 amperes with a current efficiency of 62% is passed. Calculate the time required to produce 1 kg $C l_{2} (g)$ .

Discussion

2623.	Question 31What is electrical resistivity of a material? What is its unit? Describe an experiment to study the factors on which the resistance of conducting wire depends.
Answer» Question 31 What is electrical resistivity of a material? What is its unit? Describe an experiment to study the factors on which the resistance of conducting wire depends.

Discussion

2624.	Write the cathode, anode and overall reaction for the electrolysis of water.
Answer» Write the cathode, anode and overall reaction for the electrolysis of water.

Discussion

2625.	Candles are quite calming. They give out a warm, soft light when we light them. Which of these statements is true regarding candles?
Answer» Candles are quite calming. They give out a warm, soft light when we light them. Which of these statements is true regarding candles?

2625.

Candles are quite calming. They give out a warm, soft light when we light them. Which of these statements is true regarding candles?

Answer»

Candles are quite calming. They give out a warm, soft light when we light them.

Which of these statements is true regarding candles?

Discussion

2626.	is the mass of a 500 cm3 block of silicon, if the density of silicon is 2.32 g/cm3.
Answer» is the mass of a $500 c m^{3}$ block of silicon, if the density of silicon is $2.32 g / c m^{3}$ .

Discussion

2627.	___ is a triatomic molecule consisting of three oxygen atoms.
Answer» ___ is a triatomic molecule consisting of three oxygen atoms.

Discussion

2628.	Soil is made up of two main components–one that comes from living things and the other from non-living things. What are these components?
Answer» Soil is made up of two main components–one that comes from living things and the other from non-living things. What are these components?

Discussion

2629.	Wheat and gram grow well in the soil which retains a large amount of water. Identify the correct set of soil that can be used to grow these crops.
Answer» Wheat and gram grow well in the soil which retains a large amount of water. Identify the correct set of soil that can be used to grow these crops.

Discussion

2630.	How can a chemical equation be read? Example, How will I read👇 Zn+H2SO4 ➡ZnSO4+H2⬆
Answer» How can a chemical equation be read? Example, How will I read👇 Zn+H2SO4 ➡ZnSO4+H2⬆

Discussion

2631.	what is observations of the reaction when copper sulphate solution is treated excess ammonium hydroxide?
Answer» what is observations of the reaction when copper sulphate solution is treated excess ammonium hydroxide?

Discussion

2632.	What are co terminal angles
Answer» What are co terminal angles

Discussion

2633.	Alternate methods for sewage disposal include:
Answer» Alternate methods for sewage disposal include:

Discussion

2634.	What are the uses of bases?
Answer» What are the uses of bases?

Discussion

2635.	How to balance the equation: C5H11NH2 + O2 --> CO2 + H2O + NO2
Answer» How to balance the equation: C5H11NH2 + O2 --> CO2 + H2O + NO2

Discussion

2636.	Plastic bags are considered bad for soil because:
Answer» Plastic bags are considered bad for soil because:

Discussion

2637.	For first order reaction, the time taken to reduce initial concentration to 1/4th is 10 min. The time required to reduce initial concentration to 1/16th will be (A) 10 min (B) 20 min(C) 30 min (D) 40 min
Answer» For first order reaction, the time taken to reduce initial concentration to 1/4th is 10 min. The time required to reduce initial concentration to 1/16th will be (A) 10 min (B) 20 min (C) 30 min (D) 40 min

Discussion

2638.	Nitrogen and oxygen combine to form NO and NO2 containing 46.66% and 30.43% nitrogen respectively. The data illustrates
Answer» Nitrogen and oxygen combine to form NO and NO2 containing 46.66% and 30.43% nitrogen respectively. The data illustrates

Discussion

2639.	Carbon in wood reacts with oxygen in the air to give carbon dioxide gas.Which among the following is the correct representation of this chemical reaction?
Answer» Carbon in wood reacts with oxygen in the air to give carbon dioxide gas. Which among the following is the correct representation of this chemical reaction?

Discussion

2640.	49.Given that the equilibrium constant for the reaction3(g)as a value of 278 at a particular temperature.What is the value of the equilibrium constant forthe following reaction at the same temperature?AIPMT 2012\rbrack2SOsg)SO29)22(1) 1.8 x 10-3(2) 3.6×10-3(3) 6.0 x 10-2814 1.3 x 10-5KS
Answer» 49.Given that the equilibrium constant for the reaction3(g)as a value of 278 at a particular temperature.What is the value of the equilibrium constant forthe following reaction at the same temperature?AIPMT 2012\rbrack2SOsg)SO29)22(1) 1.8 x 10-3(2) 3.6×10-3(3) 6.0 x 10-2814 1.3 x 10-5KS

Discussion

2641.	What is the use of mortar in construction?
Answer» What is the use of mortar in construction?

Discussion

2642.	What is the correct chemical equation for combustion of Zn?
Answer» What is the correct chemical equation for combustion of Zn?

Discussion

2643.	Neutralisation reaction is an example of ______ reaction.
Answer» Neutralisation reaction is an example of ______ reaction.

Discussion

2644.	Half - life of the reaction :H2O2(aq)→H2Oℓ+12O2(g) is independent of initial concentration of H2O2. Volume of O2 gas after 20 minutes is 5L at 1 atm and 27∘C, and after completion of the reaction 50 L. The rate constant is :
Answer» Half - life of the reaction : $H_{2} O_{2 (a q)} \to H_{2} O_{ℓ} + \frac{1}{2} O_{2 (g)}$ is independent of initial concentration of $H_{2} O_{2}$ . Volume of $O_{2}$ gas after 20 minutes is 5L at 1 atm and $27^{\circ} C$ , and after completion of the reaction 50 L. The rate constant is :

Discussion

2645.	Which element is used in manufacturing cans, foils, kitchen utensils, pipes, and window frames?
Answer» Which element is used in manufacturing cans, foils, kitchen utensils, pipes, and window frames?

Discussion

2646.	Animal activists are against the silk production. Why?
Answer» Animal activists are against the silk production. Why?

Discussion

2647.	Soaps are sodium or potassium salts of carboxylic acids then why they are basic in nature?
Answer» Soaps are sodium or potassium salts of carboxylic acids then why they are basic in nature?

Discussion

2648.	9. Saline hydrides are known to react with water violently producing fire can CO2 a well known fire extinguisher be used in this case explain
Answer» 9. Saline hydrides are known to react with water violently producing fire can CO2 a well known fire extinguisher be used in this case explain

Discussion

2649.	Which of the following represents the general electronic configuration of an phosphorous element?
Answer» Which of the following represents the general electronic configuration of an phosphorous element?

Discussion

2650.	What do you mean by a flame?
Answer» What do you mean by a flame?

Discussion

Explore topic-wise InterviewSolutions in .

kindly explain rock salt structure

Which of the following has the strongest inter-particle force at the room temperature?

What is alkali?

In the formula CaBr2​ what does Ca stand for and what is its valency?

even though carbon has 2 unpaired electrons ,whybits valencybis 4 instead of 2.Do carbon also can have variable valency

Why does the poet say the squirrel “wore a question mark for the tail”? Draw a quirrel, or find a picture of a squirrel sitting on the ground. How would you describe its tail?

Why do we need pure substance for our use?

Define intermolecular force of attraction.

Explain the following statement: Disgestion is a chemical change.

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

Bharath heated a closed vessel full of water. After some time he observed that the water started boiling and after some more time there was no water in the vessel. This is an example of___change.

What can we conclude from burning of candle in respect to physical and chemical changes? [3 MARKS]

An element X forms the following compounds with hydrogen, carbon and oxygen:H2X, CX2, XO2, XO3​State the three valencies of element X which are illustrated by these compounds.

Name the change involved in the burning of coal in blast furnace.

Question 10A pond contains clean water. Which of the following activities will produce least pollution of water?(a) washing clothes in the pond(b) animals bathing in the pond(c) washing motor vehicles in the pond(d) swimming in the pond

How can Rutherford says that electrons revolve around the nucleus

Which is the correct represenation for standard reduction potential of the given half reaction? Pb2+(aq)+2e−⇌Pb(s)

Where are the wool yielding animal called llama and alpaca found

When silk is burnt they smell like burning hair . however when cotton is burnt they smell like burning paper. Why?

A+B→C+DRate law for the given reaction is given as k[A][B]. If B is taken in excess then the rate of reaction will become: Here,k is the rate constant.k′=k[B]

The middle region has limited supply of Oxygen and partial burning takes place there. Due to this -

An aqueous solution of NaCl on electrolysis gives H2(g),Cl2(g) and NaOH according to the reaction :2Cl−(aq)+2H2O(l)⟶2OH−(aq)+H2(g)+Cl2(g)A direct current of 25 amperes with a current efficiency of 62% is passed. Calculate the time required to produce 1 kg Cl2(g).

Question 31What is electrical resistivity of a material? What is its unit? Describe an experiment to study the factors on which the resistance of conducting wire depends.

Write the cathode, anode and overall reaction for the electrolysis of water.

Candles are quite calming. They give out a warm, soft light when we light them. Which of these statements is true regarding candles?

is the mass of a 500 cm3 block of silicon, if the density of silicon is 2.32 g/cm3.

___ is a triatomic molecule consisting of three oxygen atoms.

Soil is made up of two main components–one that comes from living things and the other from non-living things. What are these components?

Wheat and gram grow well in the soil which retains a large amount of water. Identify the correct set of soil that can be used to grow these crops.

How can a chemical equation be read? Example, How will I read👇 Zn+H2SO4 ➡ZnSO4+H2⬆

what is observations of the reaction when copper sulphate solution is treated excess ammonium hydroxide?

What are co terminal angles

Alternate methods for sewage disposal include:

What are the uses of bases?

How to balance the equation: C5H11NH2 + O2 --> CO2 + H2O + NO2

Plastic bags are considered bad for soil because:

For first order reaction, the time taken to reduce initial concentration to 1/4th is 10 min. The time required to reduce initial concentration to 1/16th will be (A) 10 min (B) 20 min(C) 30 min (D) 40 min

Nitrogen and oxygen combine to form NO and NO2 containing 46.66% and 30.43% nitrogen respectively. The data illustrates

Carbon in wood reacts with oxygen in the air to give carbon dioxide gas.Which among the following is the correct representation of this chemical reaction?

49.Given that the equilibrium constant for the reaction3(g)as a value of 278 at a particular temperature.What is the value of the equilibrium constant forthe following reaction at the same temperature?AIPMT 2012\rbrack2SOsg)SO29)22(1) 1.8 x 10-3(2) 3.6×10-3(3) 6.0 x 10-2814 1.3 x 10-5KS

What is the use of mortar in construction?

What is the correct chemical equation for combustion of Zn?

Neutralisation reaction is an example of ______ reaction.

Half - life of the reaction :H2O2(aq)→H2Oℓ+12O2(g) is independent of initial concentration of H2O2. Volume of O2 gas after 20 minutes is 5L at 1 atm and 27∘C, and after completion of the reaction 50 L. The rate constant is :

Which element is used in manufacturing cans, foils, kitchen utensils, pipes, and window frames?

Animal activists are against the silk production. Why?

Soaps are sodium or potassium salts of carboxylic acids then why they are basic in nature?

9. Saline hydrides are known to react with water violently producing fire can CO2 a well known fire extinguisher be used in this case explain

Which of the following represents the general electronic configuration of an phosphorous element?

What do you mean by a flame?

In the formula CaBr2 what does Ca stand for and what is its valency?

An element X forms the following compounds with hydrogen, carbon and oxygen:H2X, CX2, XO2, XO3State the three valencies of element X which are illustrated by these compounds.