7248 + Interview Questions in Chemistry Page 60 InterviewSolution

2951.	What are canal rays?
Answer» What are canal rays?

Discussion

2952.	For the reaction,2NO(g)+2H2(g)→N2(g)+2H2O(g)The rate expression can be written in following ways:d[N2]dt=k1[NO][H2]; d[H2O]dt=k2[NO][H2]; −d[NO]dt=k3[NO][H2]; d[H2]dt=k4[NO][N2]The relationship between k1, k2, k3, k4 is:
Answer» For the reaction, $2 N O (g) + 2 H_{2} (g) \to N_{2} (g) + 2 H_{2} O (g)$ The rate expression can be written in following ways: $\frac{d [N_{2}]}{d t} = k_{1} [N O] [H_{2}]; \frac{d [H_{2} O]}{d t} = k_{2} [N O] [H_{2}]; \frac{- d [N O]}{d t} = k_{3} [N O] [H_{2}]; \frac{d [H_{2}]}{d t} = k_{4} [N O] [N_{2}]$ The relationship between $k_{1}, k_{2}, k_{3}, k_{4}$ is:

Discussion

2953.	What happen's when zinc granules are treated with dilute solution of H2SO4,HCL,HNO3,Nacl and NaOH? Also write the chemical equation if reaction occurs.
Answer» What happen's when zinc granules are treated with dilute solution of H2SO4,HCL,HNO3,Nacl and NaOH? Also write the chemical equation if reaction occurs.

Discussion

2954.	When sufficient oxygen is not available, combustion of methane produces ______ gas and water.
Answer» When sufficient oxygen is not available, combustion of methane produces ______ gas and water.

Discussion

2955.	is burning of wood is cleaner than using natural gas or fuel?
Answer» is burning of wood is cleaner than using natural gas or fuel?

Discussion

2956.	Raghav was performing an experiment in which he combined 0.5 g of ammonia with 1.1 g of HCl to produce ammonium chloride. Again he reacted the ammonium chloride produced with 5.2 g of silver nitrate and formed X g of ammonium nitrate and 4.4 g of silver chloride precipitates out. Find the value of X.
Answer» Raghav was performing an experiment in which he combined 0.5 g of ammonia with 1.1 g of HCl to produce ammonium chloride. Again he reacted the ammonium chloride produced with 5.2 g of silver nitrate and formed X g of ammonium nitrate and 4.4 g of silver chloride precipitates out. Find the value of X.

Discussion

2957.	Which among the following is a surface phenomenon?
Answer» Which among the following is a surface phenomenon?

Discussion

2958.	The vapour pressure of water at 300 K in a closed container is 0.82 atm. If the volume of container is doubled, its vapour pressure at 300 K will be
Answer» The vapour pressure of water at 300 K in a closed container is 0.82 atm. If the volume of container is doubled, its vapour pressure at 300 K will be

Discussion

2959.	What type of reaction is 2KClO3(s)Heat−−−→2KCl(s)+3O2(g)?
Answer» What type of reaction is $2 K C l O_{3} (s) H e a t - -- \to 2 K C l (s) + 3 O_{2} (g) ?$

Discussion

2960.	Write two uses of bakelite.
Answer» Write two uses of bakelite.

Discussion

2961.	Explain about 3R principle that you have studied.
Answer» Explain about 3R principle that you have studied.

Discussion

2962.	How many electrons could there be in the outermost orbit of the atom of an element whose valency is 2?
Answer» How many electrons could there be in the outermost orbit of the atom of an element whose valency is 2?

Discussion

2963.	What is the difference between methane and the gas in the cylinder we use at home?
Answer» What is the difference between methane and the gas in the cylinder we use at home?

Discussion

2964.	ntAn early model for an atom considered it to have a positively charged point nucleus of charge Ze, surrounded by a uniform density of negative charge opto a radius R. The atom as a whole is neutral. For this model, what is the electric field at a distance r from the nucleus?n ntn
Answer» ntAn early model for an atom considered it to have a positively charged point nucleus of charge Ze, surrounded by a uniform density of negative charge opto a radius R. The atom as a whole is neutral. For this model, what is the electric field at a distance r from the nucleus?n ntn

Discussion

2965.	STATEMENT-1: The thermal conductivity of a rectangular slab ofa material can be defined only under steady-state conditions, i.ewhen the temperatures of the end faces do not change with timeSTATEMENT-2: The rate of conduction of heat through arectangular slab is proportional to the difference in temperaturebetween its end faces(a) Statement-1 is True, Statement-2 isTrue; Statement-2 is acorrect explanation for Statement-1.b) Statement-1 is True, Statement-2 is True; Statement-2 isnot a correct explanation for Statement-1.(c) Statement-1 is True, Statement-2 is False.id) Statement-I is Falbe, Statement-2 is True.
Answer» STATEMENT-1: The thermal conductivity of a rectangular slab ofa material can be defined only under steady-state conditions, i.ewhen the temperatures of the end faces do not change with timeSTATEMENT-2: The rate of conduction of heat through arectangular slab is proportional to the difference in temperaturebetween its end faces(a) Statement-1 is True, Statement-2 isTrue; Statement-2 is acorrect explanation for Statement-1.b) Statement-1 is True, Statement-2 is True; Statement-2 isnot a correct explanation for Statement-1.(c) Statement-1 is True, Statement-2 is False.id) Statement-I is Falbe, Statement-2 is True.

Discussion

2966.	The value of CFSE for the complex given below decrease as (Atomic number of Co=27 , Rh=45 , Ir=77)(A) [Co(NH3)6]3+(B) [Rh(NH3)6]3+(C) [Ir(NH3)6]3+a) C>B>Ab)A>B>Cc)B>A>Cd)A>C>B
Answer» The value of CFSE for the complex given below decrease as (Atomic number of Co=27 , Rh=45 , Ir=77) (A) [Co(NH3)6]3+ (B) [Rh(NH3)6]3+ (C) [Ir(NH3)6]3+ a) C>B>A b)A>B>C c)B>A>C d)A>C>B

Discussion

2967.	Which of the following is the use of Bamboo
Answer» Which of the following is the use of Bamboo

Discussion

2968.	Cathode rays are ___charged particles.
Answer» Cathode rays are ___charged particles.

Discussion

2969.	What do you understand by acrylic fabric?
Answer» What do you understand by acrylic fabric?

Discussion

2970.	2g of hydrogen gas reacts with excess of oxygen in a colloidal platinum catalyst. How many moles of water will be formed??
Answer» 2g of hydrogen gas reacts with excess of oxygen in a colloidal platinum catalyst. How many moles of water will be formed??

Discussion

2971.	To which kind of synthetic fibres does terylene belong?
Answer» To which kind of synthetic fibres does terylene belong?

Discussion

2972.	what kind of oxides are formed by sodiu
Answer» what kind of oxides are formed by sodiu

Discussion

2973.	9. Phosphate. Of metal as formula MHPO_4. The formula of its chloride would be ??
Answer» 9. Phosphate. Of metal as formula MHPO_4. The formula of its chloride would be ??

Discussion

2974.	When substances made of iron are exposed to oxygen and moisture over a period of time, ___ takes place.
Answer» When substances made of iron are exposed to oxygen and moisture over a period of time, ___ takes place.

Discussion

2975.	Food cans are generally coated with tin rather than zinc because _______.
Answer» Food cans are generally coated with tin rather than zinc because _______.

Discussion

2976.	A reaction in which a single product is formed from two or more reactants is known as:-
Answer» A reaction in which a single product is formed from two or more reactants is known as:-

Discussion

2977.	What is Tyndall effect? Give a natural example of Tyndall effect.
Answer» What is Tyndall effect? Give a natural example of Tyndall effect.

Discussion

2978.	Which of the following is not an example of a physical change?
Answer» Which of the following is not an example of a physical change?

Discussion

2979.	(a) What are valence electrons? Where are valence electrons situated in an atom?(b) What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.
Answer» (a) What are valence electrons? Where are valence electrons situated in an atom? (b) What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.

Discussion

2980.	What will be the value of △ n if we consider the combustion of 1 mol of liquid ethanol if reac†an ts and products are at 298K
Answer» What will be the value of △ n if we consider the combustion of 1 mol of liquid ethanol if reac†an ts and products are at 298K

Discussion

2981.	Which product is seen when industrial chemicals combine with condensing water vapor?
Answer» Which product is seen when industrial chemicals combine with condensing water vapor?

Discussion

2982.	Question 12Choose the correct statement from the following:(a) It is difficult to transport natural gas through pipes.(b) The disadvantage of natural gas is that it cannot be used directly for burning in homes(c) Natural gas is stored under high pressure as compressed natural gas.(d) Natural gas cannot be used for power generation
Answer» Question 12 Choose the correct statement from the following: (a) It is difficult to transport natural gas through pipes. (b) The disadvantage of natural gas is that it cannot be used directly for burning in homes (c) Natural gas is stored under high pressure as compressed natural gas. (d) Natural gas cannot be used for power generation

Discussion

2983.	Why is the gravitational force, the weakest force in nature ?
Answer» Why is the gravitational force, the weakest force in nature ?

Discussion

2984.	What are the factors responsible for rusting in iron?
Answer» What are the factors responsible for rusting in iron?

Discussion

2985.	what if we use polar protic solvent in sn2 mechanism?
Answer» what if we use polar protic solvent in sn2 mechanism?

Discussion

2986.	Question 3:What are the properties of liquid states?
Answer» Question 3: What are the properties of liquid states?

2986.

Question 3:What are the properties of liquid states?

Answer»

Question 3:

What are the properties of liquid states?

Discussion

2987.	Plants use nitrogen in the form of___.
Answer» Plants use nitrogen in the form of___.

Discussion

2988.	Elements react in order to attain the ___ gas configuration.
Answer» Elements react in order to attain the ___ gas configuration.

Discussion

2989.	Two metallic oxides contain 27.6./. & 30./. Oxygen respectively.if the formula of the first oxide is X3O4,that of the second will be
Answer» Two metallic oxides contain 27.6./. & 30./. Oxygen respectively.if the formula of the first oxide is X3O4,that of the second will be

Discussion

2990.	Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.Write down word equations for this reactions taking place in this process.
Answer» Saloni took a piece of burning charcoal and collected the gas evolved in a test tube. Write down word equations for this reactions taking place in this process.

Discussion

2991.	why was niddle deflected?
Answer» why was niddle deflected?

Discussion

2992.	If we suspend a weight using a spring, it stretches.What kind of changes are involved in this?
Answer» If we suspend a weight using a spring, it stretches. What kind of changes are involved in this?

Discussion

2993.	19.Organic compound containing carbon (C)=40.65% , (H)=8.55% , (N)=23.77 and rest amount is oxygen find molecular formula of these compounds if Vapour density is 29.5
Answer» 19.Organic compound containing carbon (C)=40.65% , (H)=8.55% , (N)=23.77 and rest amount is oxygen find molecular formula of these compounds if Vapour density is 29.5

Discussion

2994.	Which of the following best matches the characteristics of mixtures?
Answer» Which of the following best matches the characteristics of mixtures?

Discussion

2995.	Which of the following is an example of inexhaustible source of energy?
Answer» Which of the following is an example of inexhaustible source of energy?

Discussion

2996.	The type of combustion in which organic fuels that leads to pollution is :-
Answer» The type of combustion in which organic fuels that leads to pollution is :-

Discussion

2997.	What would be percentage composition by volume of a mixture of CO and CH4 whose 10.5mL requires 9mL oxygen for complete combustion?
Answer» What would be percentage composition by volume of a mixture of CO and CH4 whose 10.5mL requires 9mL oxygen for complete combustion?

Discussion

2998.	Which is the most versatile of all metals in present day metallurgy science?
Answer» Which is the most versatile of all metals in present day metallurgy science?

Discussion

2999.	Which of the following are the properties of plastic?
Answer» Which of the following are the properties of plastic?

Discussion

3000.	The methods for prevention of corrosion are:
Answer» The methods for prevention of corrosion are:

Discussion

Explore topic-wise InterviewSolutions in .

What are canal rays?

For the reaction,2NO(g)+2H2(g)→N2(g)+2H2O(g)The rate expression can be written in following ways:d[N2]dt=k1[NO][H2]; d[H2O]dt=k2[NO][H2]; −d[NO]dt=k3[NO][H2]; d[H2]dt=k4[NO][N2]The relationship between k1, k2, k3, k4 is:

What happen's when zinc granules are treated with dilute solution of H2SO4,HCL,HNO3,Nacl and NaOH? Also write the chemical equation if reaction occurs.

When sufficient oxygen is not available, combustion of methane produces ______ gas and water.

is burning of wood is cleaner than using natural gas or fuel?

Which among the following is a surface phenomenon?

The vapour pressure of water at 300 K in a closed container is 0.82 atm. If the volume of container is doubled, its vapour pressure at 300 K will be

What type of reaction is 2KClO3(s)Heat−−−→2KCl(s)+3O2(g)?

Write two uses of bakelite.

Explain about 3R principle that you have studied.

How many electrons could there be in the outermost orbit of the atom of an element whose valency is 2?

What is the difference between methane and the gas in the cylinder we use at home?

ntAn early model for an atom considered it to have a positively charged point nucleus of charge Ze, surrounded by a uniform density of negative charge opto a radius R. The atom as a whole is neutral. For this model, what is the electric field at a distance r from the nucleus?n ntn

The value of CFSE for the complex given below decrease as (Atomic number of Co=27 , Rh=45 , Ir=77)(A) [Co(NH3)6]3+(B) [Rh(NH3)6]3+(C) [Ir(NH3)6]3+a) C>B>Ab)A>B>Cc)B>A>Cd)A>C>B

Which of the following is the use of Bamboo

Cathode rays are ___charged particles.

What do you understand by acrylic fabric?

2g of hydrogen gas reacts with excess of oxygen in a colloidal platinum catalyst. How many moles of water will be formed??

To which kind of synthetic fibres does terylene belong?

what kind of oxides are formed by sodiu

9. Phosphate. Of metal as formula MHPO_4. The formula of its chloride would be ??

When substances made of iron are exposed to oxygen and moisture over a period of time, ___ takes place.

Food cans are generally coated with tin rather than zinc because _______.

A reaction in which a single product is formed from two or more reactants is known as:-

What is Tyndall effect? Give a natural example of Tyndall effect.

Which of the following is not an example of a physical change?

(a) What are valence electrons? Where are valence electrons situated in an atom?​(b) What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.

What will be the value of △ n if we consider the combustion of 1 mol of liquid ethanol if reac†an ts and products are at 298K

Which product is seen when industrial chemicals combine with condensing water vapor?

Why is the gravitational force, the weakest force in nature ?

What are the factors responsible for rusting in iron?

what if we use polar protic solvent in sn2 mechanism?

Question 3:What are the properties of liquid states?

Plants use nitrogen in the form of___.

Elements react in order to attain the ___ gas configuration.

Two metallic oxides contain 27.6./. & 30./. Oxygen respectively.if the formula of the first oxide is X3O4,that of the second will be

Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.Write down word equations for this reactions taking place in this process.

why was niddle deflected?

If we suspend a weight using a spring, it stretches.What kind of changes are involved in this?

19.Organic compound containing carbon (C)=40.65% , (H)=8.55% , (N)=23.77 and rest amount is oxygen find molecular formula of these compounds if Vapour density is 29.5

Which of the following best matches the characteristics of mixtures?

Which of the following is an example of inexhaustible source of energy?

The type of combustion in which organic fuels that leads to pollution is :-

What would be percentage composition by volume of a mixture of CO and CH4 whose 10.5mL requires 9mL oxygen for complete combustion?

Which is the most versatile of all metals in present day metallurgy science?

Which of the following are the properties of plastic?

The methods for prevention of corrosion are:

(a) What are valence electrons? Where are valence electrons situated in an atom?(b) What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.