7248 + Interview Questions in Chemistry Page 127 InterviewSolution

6301.	Which of the following can be used to synthesize SO2 ?
Answer» Which of the following can be used to synthesize $S O_{2}$ ?

Discussion

6302.	Abhinav a class 9 student arranged the given setup to study the reactivity of some metals with water .he summerised his observations as follows: 1.In test tube p,there was no reaction in cold water but when th etest tube was heated for a while bubles of gas was seen. 2.In test tube Q,bubbles of gas were formed only after boiling the water . 3.In test tube R,no gas was produced even on boiling the water. 4.In test ube S,reaction occured vigirously. The metals present in P,Q,R,S could be respectively A.Na,Mg,Zn,Fe B.Na,Mg,Al,Cu C.Mg,Zn,Cu,Na D.Mg,Zn,Fe,Al
Answer» Abhinav a class 9 student arranged the given setup to study the reactivity of some metals with water .he summerised his observations as follows: 1.In test tube p,there was no reaction in cold water but when th etest tube was heated for a while bubles of gas was seen. 2.In test tube Q,bubbles of gas were formed only after boiling the water . 3.In test tube R,no gas was produced even on boiling the water. 4.In test ube S,reaction occured vigirously. The metals present in P,Q,R,S could be respectively A.Na,Mg,Zn,Fe B.Na,Mg,Al,Cu C.Mg,Zn,Cu,Na D.Mg,Zn,Fe,Al

Discussion

6303.	Identify the correct statement regarding an alpha particle.
Answer» Identify the correct statement regarding an alpha particle.

Discussion

6304.	Can you hold a hot metallic pan which is without a plastic or a wooden handle ?Give reason for your answer.
Answer» Can you hold a hot metallic pan which is without a plastic or a wooden handle ?Give reason for your answer.

Discussion

6305.	Classify the following as biodegradable and non-biodegradable materials : Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle
Answer» Classify the following as biodegradable and non-biodegradable materials : Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle

6305.

Classify the following as biodegradable and non-biodegradable materials : Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle

Answer»

Classify the following as biodegradable and non-biodegradable materials :

Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle

Discussion

6306.	Assuming the electric consumption per day to be 20 kWh and the rate of electricity be ₹ 8.5 per unit, find how much money is to be paid in a month of FEB 2016?
Answer» Assuming the electric consumption per day to be 20 kWh and the rate of electricity be ₹ 8.5 per unit, find how much money is to be paid in a month of FEB 2016?

6306.

Assuming the electric consumption per day to be 20 kWh and the rate of electricity be ₹ 8.5 per unit, find how much money is to be paid in a month of FEB 2016?

Answer»

Assuming the electric consumption per day to be 20 kWh and the rate of electricity be ₹ 8.5 per unit, find how much money is to be paid in a month of FEB 2016?

Discussion

6307.	What is the catalyst 'y' used in the water gas shift reaction? Reaction 1: C(red hot coke) + H2O(g)1273K⟶ CO(g) + H2(g) Reaction 2: CO(g) + H2(g) + H2O(g)y (catalyst)⟶ CO2(g) + 2H2(g)
Answer» What is the catalyst 'y' used in the water gas shift reaction? Reaction 1: $C (r e d h o t c o k e) + H_{2} O (g) 1273 K ⟶ C O (g) + H_{2} (g)$ Reaction 2: $C O (g) + H_{2} (g) + H_{2} O (g) y (c a t a l y s t) ⟶ C O_{2} (g) + 2 H_{2} (g)$

6307.

What is the catalyst 'y' used in the water gas shift reaction? Reaction 1: C(red hot coke) + H2O(g)1273K⟶ CO(g) + H2(g) Reaction 2: CO(g) + H2(g) + H2O(g)y (catalyst)⟶ CO2(g) + 2H2(g)

Answer»

What is the catalyst 'y' used in the water gas shift reaction?

Reaction 1: $C (r e d h o t c o k e) + H_{2} O (g) 1273 K ⟶ C O (g) + H_{2} (g)$

Reaction 2: $C O (g) + H_{2} (g) + H_{2} O (g) y (c a t a l y s t) ⟶ C O_{2} (g) + 2 H_{2} (g)$

Discussion

6308.	Which of the following substance is responsible for the bluish-green colour of glass?
Answer» Which of the following substance is responsible for the bluish-green colour of glass?

Discussion

6309.	Which one of these is the correct symbol of the element zinc?
Answer» Which one of these is the correct symbol of the element zinc?

Discussion

6310.	Out of the following substances, which is an example of a compound?
Answer» Out of the following substances, which is an example of a compound?

Discussion

6311.	Why the iron pillar don't get rusted?
Answer» Why the iron pillar don't get rusted?

Discussion

6312.	Why is there a nesecity of neutron in an atom?
Answer» Why is there a nesecity of neutron in an atom?

Discussion

6313.	Pick the odd one out.
Answer» Pick the odd one out.

Discussion

6314.	How does phosphorus react with water?
Answer» How does phosphorus react with water?

Discussion

6315.	Type of polymer.Different type polymer used in our daily life.
Answer» Type of polymer.Different type polymer used in our daily life.

Discussion

6316.	Which of the following is a man -made fibre prepared from wood-pulp ?
Answer» Which of the following is a man -made fibre prepared from wood-pulp ?

Discussion

6317.	How does synthetic waste pollute water ??
Answer» How does synthetic waste pollute water ??

Discussion

6318.	Chemical formula of a molecular compound is determined on the basis of:
Answer» Chemical formula of a molecular compound is determined on the basis of:

Discussion

6319.	More volatile liquid from a liquid-liquid mixture of miscible liquids undergoes ____ on heating.
Answer» More volatile liquid from a liquid-liquid mixture of miscible liquids undergoes ____ on heating.

Discussion

6320.	Write equation for the reactions of: 1. Iron with steam. 2. Calcium with water. 3. Potassium with water. [3 MARKS]
Answer» Write equation for the reactions of: 1. Iron with steam. 2. Calcium with water. 3. Potassium with water. [3 MARKS]

Discussion

6321.	Copper and brass vessels are cleaned with lemon.give reason.
Answer» Copper and brass vessels are cleaned with lemon.give reason.

Discussion

6322.	Why aluminium foils are used to wrap food items?
Answer» Why aluminium foils are used to wrap food items?

Discussion

6323.	Fe+O2+H2O=
Answer» Fe+O2+H2O=

Discussion

6324.	Which non-metal is used for purification of water?
Answer» Which non-metal is used for purification of water?

Discussion

6325.	Name one solid, one liquid and one gas which burn by producing a flame.
Answer» Name one solid, one liquid and one gas which burn by producing a flame.

Discussion

6326.	Aluminium belongs to group 13 and sulphur belongs to group 16 of the periodic table. The compound formed by aluminum and sulphur is:
Answer» Aluminium belongs to group 13 and sulphur belongs to group 16 of the periodic table. The compound formed by aluminum and sulphur is:

Discussion

6327.	In an experiment, 2 g of nitrogen gas reacts with 6 g of hydrogen to form 8 g of ammonia. When 2 g of nitrogen reacts with 12 g of hydrogen, what mass of ammonia will be produced?
Answer» In an experiment, 2 g of nitrogen gas reacts with 6 g of hydrogen to form 8 g of ammonia. When 2 g of nitrogen reacts with 12 g of hydrogen, what mass of ammonia will be produced?

Discussion

6328.	What type of reaction would you classify burning of coal as?
Answer» What type of reaction would you classify burning of coal as?

Discussion

6329.	The appearance of yellow patches and stain on Tajmahal's marble outer covering is mainly due to ____________ acid.
Answer» The appearance of yellow patches and stain on Tajmahal's marble outer covering is mainly due to ____________ acid.

Discussion

6330.	Question 4 (b) Sodium is a very reactive metal. (True/False)
Answer» Question 4 (b) Sodium is a very reactive metal. (True/False)

Discussion

6331.	Is mica a conductor of electricity?
Answer» Is mica a conductor of electricity?

Discussion

6332.	Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: MetalColour changeXGreen coatingYBrownish redZNo change Identify the probable metals Naveen had.
Answer» Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: $\begin{matrix} M e t a l & C o l o u r c h a n g e X & G r e e n c o a t i n g Y & B r o w n i s h r e d Z & N o c h a n g e \end{matrix}$ Identify the probable metals Naveen had.

Discussion

6333.	Which of the following is generally not a property of metals?
Answer» Which of the following is generally not a property of metals?

Discussion

6334.	We have seen potato getting used in the experiment of glowing bulbs. What kind of acid is contained in potato that helps in glowing the bulb experiment?
Answer» We have seen potato getting used in the experiment of glowing bulbs. What kind of acid is contained in potato that helps in glowing the bulb experiment?

Discussion

6335.	Which of the following should be done to control fire?
Answer» Which of the following should be done to control fire?

Discussion

6336.	There are protons eelectrons etc. Is there something called anti matter???
Answer» There are protons eelectrons etc. Is there something called anti matter???

Discussion

6337.	What is precipitate
Answer» What is precipitate

Discussion

6338.	Statements: Some wires are fires. All fires are tyres. Conclusions: I. At least some tyres are wires. II. Some fires are definitely not wires.
Answer» Statements: Some wires are fires. All fires are tyres. Conclusions: I. At least some tyres are wires. II. Some fires are definitely not wires.

6338.

Statements: Some wires are fires. All fires are tyres. Conclusions: I. At least some tyres are wires. II. Some fires are definitely not wires.

Answer»

Statements:

Some wires are fires.

All fires are tyres.

Conclusions:

I. At least some tyres are wires.

II. Some fires are definitely not wires.

Discussion

6339.	Draw a map of your school compound using proper scale and symbols for various features like playground, main building garden etc.
Answer» Draw a map of your school compound using proper scale and symbols for various features like playground, main building garden etc.

Discussion

6340.	PVC is a type of:
Answer» PVC is a type of:

Discussion

6341.	___ is the method for the separation of the pure salt crystals from sea water.
Answer» ___ is the method for the separation of the pure salt crystals from sea water.

Discussion

6342.	Which of the following metals will float when put in a beaker containing cold water?
Answer» Which of the following metals will float when put in a beaker containing cold water?

Discussion

6343.	Which of the following fibre is also known as regenerated fibre?
Answer» Which of the following fibre is also known as regenerated fibre?

Discussion

6344.	The non-metal that is liquid at room temperature is:
Answer» The non-metal that is liquid at room temperature is:

Discussion

6345.	Mercury cells are used in:
Answer» Mercury cells are used in:

Discussion

6346.

Which of the following option correctly represents the entries matched in column I and column II. Column I Column II (a) Solid (1) Have fixed volume but no fixed shape (b) Liquid (2) Formed by combining two or more than two pure substances (c) Gas (3) Have fixed shape and volume (d) Mixture (4) Spaces between the particles are maximum

Answer»

Which of the following option correctly represents the entries matched in column I and column II.

Column I

Column II

(a) Solid

(1) Have fixed volume but no fixed shape

(b) Liquid

(2) Formed by combining two or more than two pure substances

(c) Gas

(3) Have fixed shape and volume

(d) Mixture

(4) Spaces between the particles are maximum

Discussion

6347.	What is the difference between combustion and flame?
Answer» What is the difference between combustion and flame?

Discussion

6348.	Identify X in the following reaction: Ca(OH)2 + 2X → CaCl2 + 2H2O
Answer» Identify X in the following reaction: $C a (O H)_{2} + 2 X$ $\to$ $C a C l_{2} + 2 H_{2} O$

Discussion

6349.	Reaction NamesReactionsiDisplacement reactionA.CaO+H2O→Ca(OH)2iiDecomposition ReactionB.Fe+Pb(NO3)2→Fe(NO3)2+PbiiiRedox ReactionC.MgCl2+Ca(OH)2→Mg(OH)2+CaCl2ivCombination ReactionD.2KClO3→2KCl+3O2vDouble Displacement ReactionE.CO2+H2→CO+H2O
Answer» $\begin{matrix} R e a c t i o n N a m e s & R e a c t i o n s i & D i s p l a c e m e n t r e a c t i o n & A . C a O + H_{2} O \to C a (O H)_{2} i i & D e c o m p o s i t i o n R e a c t i o n & B . F e + P b (N O_{3})_{2} \to F e (N O_{3})_{2} + P b i i i & R e d o x R e a c t i o n & C . M g C l_{2} + C a (O H)_{2} \to M g (O H)_{2} + C a C l_{2} i v & C o m b i n a t i o n R e a c t i o n & D . 2 K C l O_{3} \to 2 K C l + 3 O_{2} v & D o u b l e D i s p l a c e m e n t R e a c t i o n & E . C O_{2} + H_{2} \to C O + H_{2} O \end{matrix}$

Discussion

6350.	The size of particles of a matter is:
Answer» $The size of particles of a matter is:$

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following can be used to synthesize SO2 ?

Identify the correct statement regarding an alpha particle.

Can you hold a hot metallic pan which is without a plastic or a wooden handle ?Give reason for your answer.

Classify the following as biodegradable and non-biodegradable materials : Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle

Assuming the electric consumption per day to be 20 kWh and the rate of electricity be ₹ 8.5 per unit, find how much money is to be paid in a month of FEB 2016?

What is the catalyst 'y' used in the water gas shift reaction? Reaction 1: C(red hot coke) + H2O(g)1273K⟶ CO(g) + H2(g) Reaction 2: CO(g) + H2(g) + H2O(g)y (catalyst)⟶ CO2(g) + 2H2(g)

Which of the following substance is responsible for the bluish-green colour of glass?

Which one of these is the correct symbol of the element zinc?

Out of the following substances, which is an example of a compound?

Why the iron pillar don't get rusted?

Why is there a nesecity of neutron in an atom?

Pick the odd one out.

How does phosphorus react with water?

Type of polymer.Different type polymer used in our daily life.

Which of the following is a man -made fibre prepared from wood-pulp ?

How does synthetic waste pollute water ??

Chemical formula of a molecular compound is determined on the basis of:

More volatile liquid from a liquid-liquid mixture of miscible liquids undergoes ____ on heating.

Write equation for the reactions of: 1. Iron with steam. 2. Calcium with water. 3. Potassium with water. [3 MARKS]

Copper and brass vessels are cleaned with lemon.give reason.

Why aluminium foils are used to wrap food items?

Fe+O2+H2O=

Which non-metal is used for purification of water?

Name one solid, one liquid and one gas which burn by producing a flame.

Aluminium belongs to group 13 and sulphur belongs to group 16 of the periodic table. The compound formed by aluminum and sulphur is:

In an experiment, 2 g of nitrogen gas reacts with 6 g of hydrogen to form 8 g of ammonia. When 2 g of nitrogen reacts with 12 g of hydrogen, what mass of ammonia will be produced?

What type of reaction would you classify burning of coal as?

The appearance of yellow patches and stain on Tajmahal's marble outer covering is mainly due to ____________ acid.

Question 4 (b) Sodium is a very reactive metal. (True/False)

Is mica a conductor of electricity?

Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: MetalColour changeXGreen coatingYBrownish redZNo change Identify the probable metals Naveen had.

Which of the following is generally not a property of metals?

We have seen potato getting used in the experiment of glowing bulbs. What kind of acid is contained in potato that helps in glowing the bulb experiment?

Which of the following should be done to control fire?

There are protons eelectrons etc. Is there something called anti matter???

What is precipitate

Statements: Some wires are fires. All fires are tyres. Conclusions: I. At least some tyres are wires. II. Some fires are definitely not wires.

Draw a map of your school compound using proper scale and symbols for various features like playground, main building garden etc.

PVC is a type of:

___ is the method for the separation of the pure salt crystals from sea water.

Which of the following metals will float when put in a beaker containing cold water?

Which of the following fibre is also known as regenerated fibre?

The non-metal that is liquid at room temperature is:

Mercury cells are used in:

What is the difference between combustion and flame?

Identify X in the following reaction: Ca(OH)2 + 2X → CaCl2 + 2H2O

Reaction NamesReactionsiDisplacement reactionA.CaO+H2O→Ca(OH)2iiDecomposition ReactionB.Fe+Pb(NO3)2→Fe(NO3)2+PbiiiRedox ReactionC.MgCl2+Ca(OH)2→Mg(OH)2+CaCl2ivCombination ReactionD.2KClO3→2KCl+3O2vDouble Displacement ReactionE.CO2+H2→CO+H2O

The size of particles of a matter is: