7248 + Interview Questions in Chemistry Page 130 InterviewSolution

6451.	In my tab, there in chemistry there I have a doutb regarding hydrogen. What is tritium.
Answer» In my tab, there in chemistry there I have a doutb regarding hydrogen. What is tritium.

Discussion

6452.	On destructive distillation, 1000 kg of coal gives P kg of coke, Q litres of ammonia, R litres of coal tar and S m3 of coal gas. The value of P, Q, R and S respectively are:
Answer» On destructive distillation, 1000 kg of coal gives P kg of coke, Q litres of ammonia, R litres of coal tar and S $m^{3}$ of coal gas. The value of P, Q, R and S respectively are:

Discussion

6453.	A solution contains y ml of acetone in 150ml of solution. The concentration of the solution is 25% in terms of volume by volume percentage. Find y.
Answer» A solution contains y ml of acetone in 150ml of solution. The concentration of the solution is $25 %$ in terms of volume by volume percentage. Find y.

Discussion

6454.	Which metal does not react with anything
Answer» Which metal does not react with anything

Discussion

6455.	Why do we keep water in earthen pots during summer?
Answer» Why do we keep water in earthen pots during summer?

Discussion

6456.	Heating limestone at a temperature of 1070K we get:
Answer» Heating limestone at a temperature of 1070K we get:

Discussion

6457.	Amorphous boron on heating in air and with nitrogen produces:
Answer» Amorphous boron on heating in air and with nitrogen produces:

Discussion

6458.	Which fuel was used in railway engines to produce steam to run the engine?
Answer» Which fuel was used in railway engines to produce steam to run the engine?

6458.

Which fuel was used in railway engines to produce steam to run the engine?

Answer»

Which fuel was used in railway engines to produce steam to run the engine?

Discussion

6459.	The burning of a candle is a:
Answer» The burning of a candle is a:

Discussion

6460.	What is CNG ? State its one use.
Answer» What is CNG ? State its one use.

Discussion

6461.	When washing soda is treated with hydrochloric acid, it gives off colourless gas with lot of effervescence. What is the name of that gas formed?
Answer» When washing soda is treated with hydrochloric acid, it gives off colourless gas with lot of effervescence. What is the name of that gas formed?

Discussion

6462.	What are exhaustible natural resources? Give 4 examples. [3 MARKS]
Answer» What are exhaustible natural resources? Give 4 examples. [3 MARKS]

Discussion

6463.	When Iron is mixed with Carbon, Nickel and Chromium, the alloy formed is ___
Answer» When Iron is mixed with Carbon, Nickel and Chromium, the alloy formed is ___

Discussion

6464.	Rayon is different from truly synthetic fibres because : (a) it has a silk-like appearance. (b) it is obtained from wood pulp. (c) its fibres can be woven like those of natural fibres. (d) it can be dyed in wide variety of colours.
Answer» Rayon is different from truly synthetic fibres because : (a) it has a silk-like appearance. (b) it is obtained from wood pulp. (c) its fibres can be woven like those of natural fibres. (d) it can be dyed in wide variety of colours.

6464.

Rayon is different from truly synthetic fibres because : (a) it has a silk-like appearance. (b) it is obtained from wood pulp. (c) its fibres can be woven like those of natural fibres. (d) it can be dyed in wide variety of colours.

Answer»

Rayon is different from truly synthetic fibres because :

(a) it has a silk-like appearance.

(b) it is obtained from wood pulp.

(c) its fibres can be woven like those of natural fibres.

(d) it can be dyed in wide variety of colours.

Discussion

6465.	Which of the following are various methods of water purification?
Answer» Which of the following are various methods of water purification?

Discussion

6466.	How to balance a chemical reaction?
Answer» How to balance a chemical reaction?

Discussion

6467.	Which of the following describes the difference between pure air and polluted air?
Answer» Which of the following describes the difference between pure air and polluted air?

Discussion

6468.	H2(g)+V2O5(s)→V2O3(s)+H2O(l) Let the coefficients for the given reaction be as follows: aH2(g)+bV2O5(s)→cV2O3(s)+dH2O(l) What will be the equations for the number of atoms of each element, so that each is balanced?
Answer» $H_{2} (g) + V_{2} O_{5} (s) \to V_{2} O_{3} (s) + H_{2} O (l)$ Let the coefficients for the given reaction be as follows: $a H_{2} (g) + b V_{2} O_{5} (s) \to c V_{2} O_{3} (s) + d H_{2} O (l)$ What will be the equations for the number of atoms of each element, so that each is balanced?

Discussion

6469.	Question 22 (ii) Fill in the blanks (ii) The synthetic fibres are also known as ___ fibres.
Answer» Question 22 (ii) Fill in the blanks (ii) The synthetic fibres are also known as ___ fibres.

Discussion

6470.	What happens if a iron nail dipped in copper sulphate solution
Answer» What happens if a iron nail dipped in copper sulphate solution

Discussion

6471.	Identify the element that has two electrons in the 'K' shell of its atom.
Answer» Identify the element that has two electrons in the 'K' shell of its atom.

Discussion

6472.	What is meant by the term polyatomic and how can a hydrogen ion be a polyatomic ion??? Please send a detailed answer.
Answer» What is meant by the term polyatomic and how can a hydrogen ion be a polyatomic ion??? Please send a detailed answer.

Discussion

6473.	Why does a goldsmith blow air into a kerosene lamp with a blow pipe?
Answer» Why does a goldsmith blow air into a kerosene lamp with a blow pipe?

Discussion

6474.	What is mother liquor?
Answer» What is mother liquor?

Discussion

6475.	While working in the kitchen, clothes of Priya catches fire accidentally causing severe burns. The person is most likely wearing clothes made of :
Answer» While working in the kitchen, clothes of Priya catches fire accidentally causing severe burns. The person is most likely wearing clothes made of :

Discussion

6476.	Why is aluminium foil is used in packing food.
Answer» Why is aluminium foil is used in packing food.

Discussion

6477.	Fractional distillation is used in separation of crude oil instead of simple distillation. Why?
Answer» Fractional distillation is used in separation of crude oil instead of simple distillation. Why?

Discussion

6478.	What is homogeneous and heterogeneous mixtures
Answer» What is homogeneous and heterogeneous mixtures

Discussion

6479.	Who is considered as the "Father of Rayon"?
Answer» Who is considered as the "Father of Rayon"?

Discussion

6480.	The ability of a substance to be dissolved in a solvent, at a given temperature, is known as __________.
Answer» The ability of a substance to be dissolved in a solvent, at a given temperature, is known as __________.

Discussion

6481.	What is the term given to the salt of monobasic nitric acid?
Answer» What is the term given to the salt of monobasic nitric acid?

Discussion

6482.	When nitric acid HNO3 reacts with metals, hydrogen gas is not observed because
Answer» When nitric acid $H N O_{3}$ reacts with metals, hydrogen gas is not observed because

Discussion

6483.	Deionised water is obtained by
Answer» Deionised water is obtained by

Discussion

6484.	What type of oxides are formed : (a) when metals combine with oxygen ? (b) when non-metals combine with oxygen ?
Answer» What type of oxides are formed : (a) when metals combine with oxygen ? (b) when non-metals combine with oxygen ?

6484.

What type of oxides are formed : (a) when metals combine with oxygen ? (b) when non-metals combine with oxygen ?

Answer»

What type of oxides are formed :

(a) when metals combine with oxygen ?

(b) when non-metals combine with oxygen ?

Discussion

6485.	Name the first fully synthetic fibre.
Answer» Name the first fully synthetic fibre.

Discussion

6486.	The smell of hot sizzling food reaches several metres away, but to get the smell from cold food, we have to go close. Which of the following reason best explains the given observation?
Answer» The smell of hot sizzling food reaches several metres away, but to get the smell from cold food, we have to go close. Which of the following reason best explains the given observation?

Discussion

6487.	Write a word equation for the reaction of magnesium with oxygen.
Answer» Write a word equation for the reaction of magnesium with oxygen.

Discussion

6488.	Properties of Hydrogen resembles from which of the following elements
Answer» Properties of Hydrogen resembles from which of the following elements

Discussion

6489.	Hydrogen and oxygen are very reactive elements but why do they form water when mixed together?
Answer» Hydrogen and oxygen are very reactive elements but why do they form water when mixed together?

Discussion

6490.	A mixture of camphor and salt can be separated by the process of ___.
Answer» A mixture of camphor and salt can be separated by the process of ___.

Discussion

6491.	Question 16 Fill in the blanks in the following sentences. (a) Coal is one of the ___ used to cook food. (b) When heated in air, coal burns and produces mainly ___ gas (c) Coal tar is a black, thick ___ with an ___ smell. (d) Petroleum, ___ and ___ are fossil fuels. (e) Forests and coal are ___ natural resources
Answer» Question 16 Fill in the blanks in the following sentences. (a) Coal is one of the ___ used to cook food. (b) When heated in air, coal burns and produces mainly ___ gas (c) Coal tar is a black, thick ___ with an ___ smell. (d) Petroleum, ___ and ___ are fossil fuels. (e) Forests and coal are ___ natural resources

Discussion

6492.	Which among the following will have the highest increase in temperature for the same amount of heat?
Answer» Which among the following will have the highest increase in temperature for the same amount of heat?

Discussion

6493.	For the non - stoichiometric reaction, 2A+B → C + D, the following kinetic data were obtained in three separate experiments, all at 298 K. InitialInitialInitial rate of concentrationconcentrationformation of C [A][B](mol L−1s−1)(i)0.1 M0.1 M1.2×10−3(ii)0.1 M0.2 M1.2×1−3(iii)0.2 M0.1 M2.4×10−3 The rate law for the formation of C is
Answer» For the non - stoichiometric reaction, 2A+B $\to$ C + D, the following kinetic data were obtained in three separate experiments, all at 298 K. $\begin{matrix} Initial & Initial & Initial rate of concentration & concentration & formation of C [A] & [B] & (m o l L^{- 1} s^{- 1}) (i) & 0.1 M & 0.1 M & 1.2 \times 10^{- 3} (i i) & 0.1 M & 0.2 M & 1.2 \times 1^{- 3} (i i i) & 0.2 M & 0.1 M & 2.4 \times 10^{- 3} \end{matrix}$ The rate law for the formation of C is

6493.

For the non - stoichiometric reaction, 2A+B → C + D, the following kinetic data were obtained in three separate experiments, all at 298 K. InitialInitialInitial rate of concentrationconcentrationformation of C [A][B](mol L−1s−1)(i)0.1 M0.1 M1.2×10−3(ii)0.1 M0.2 M1.2×1−3(iii)0.2 M0.1 M2.4×10−3 The rate law for the formation of C is

Answer»

For the non - stoichiometric reaction, 2A+B $\to$ C + D, the following kinetic data were obtained in three separate experiments, all at 298 K.

$\begin{matrix} Initial & Initial & Initial rate of concentration & concentration & formation of C [A] & [B] & (m o l L^{- 1} s^{- 1}) (i) & 0.1 M & 0.1 M & 1.2 \times 10^{- 3} (i i) & 0.1 M & 0.2 M & 1.2 \times 1^{- 3} (i i i) & 0.2 M & 0.1 M & 2.4 \times 10^{- 3} \end{matrix}$ The rate law for the formation of C is

Discussion

6494.	Question 5 (c) Tick True/False against the following statements : Coke is the purest form of carbon.
Answer» Question 5 (c) Tick True/False against the following statements : Coke is the purest form of carbon.

Discussion

6495.	Which of the following metals is/are stored in kerosene oil?
Answer» Which of the following metals is/are stored in kerosene oil?

Discussion

6496.	A metal X reacts with oxygen gas to form an amphoteric oxide. Identify the metal. Recall that amphoteric oxides show both acidic and basic behaviour. X+O2→Amphoteric Oxide
Answer» A metal X reacts with oxygen gas to form an amphoteric oxide. Identify the metal. Recall that amphoteric oxides show both acidic and basic behaviour. $X + O_{2} \to Amphoteric Oxide$

Discussion

6497.	Does hydrogen support combustion? If not then why??
Answer» Does hydrogen support combustion? If not then why??

Discussion

6498.	Matter is defined as anything that occupies _________ and has _________.
Answer» Matter is defined as anything that occupies _________ and has _________.

Discussion

6499.	XCl2 is the chloride of a metal X. State the formula of its hydroxide and sulphate
Answer» XCl2 is the chloride of a metal X. State the formula of its hydroxide and sulphate

Discussion

6500.	Which metals given below can be used for making bronze?
Answer» Which metals given below can be used for making bronze?

Discussion

Explore topic-wise InterviewSolutions in .

In my tab, there in chemistry there I have a doutb regarding hydrogen. What is tritium.

On destructive distillation, 1000 kg of coal gives P kg of coke, Q litres of ammonia, R litres of coal tar and S m3 of coal gas. The value of P, Q, R and S respectively are:

A solution contains y ml of acetone in 150ml of solution. The concentration of the solution is 25% in terms of volume by volume percentage. Find y.

Which metal does not react with anything

Why do we keep water in earthen pots during summer?

Heating limestone at a temperature of 1070K we get:

Amorphous boron on heating in air and with nitrogen produces:

Which fuel was used in railway engines to produce steam to run the engine?

The burning of a candle is a:

What is CNG ? State its one use.

When washing soda is treated with hydrochloric acid, it gives off colourless gas with lot of effervescence. What is the name of that gas formed?

What are exhaustible natural resources? Give 4 examples. [3 MARKS]

When Iron is mixed with Carbon, Nickel and Chromium, the alloy formed is ___

Rayon is different from truly synthetic fibres because : (a) it has a silk-like appearance. (b) it is obtained from wood pulp. (c) its fibres can be woven like those of natural fibres. (d) it can be dyed in wide variety of colours.

Which of the following are various methods of water purification?

How to balance a chemical reaction?

Which of the following describes the difference between pure air and polluted air?

H2(g)+V2O5(s)→V2O3(s)+H2O(l) Let the coefficients for the given reaction be as follows: aH2(g)+bV2O5(s)→cV2O3(s)+dH2O(l) What will be the equations for the number of atoms of each element, so that each is balanced?

Question 22 (ii) Fill in the blanks (ii) The synthetic fibres are also known as ___ fibres.

What happens if a iron nail dipped in copper sulphate solution

Identify the element that has two electrons in the 'K' shell of its atom.

What is meant by the term polyatomic and how can a hydrogen ion be a polyatomic ion??? Please send a detailed answer.

Why does a goldsmith blow air into a kerosene lamp with a blow pipe?

What is mother liquor?

While working in the kitchen, clothes of Priya catches fire accidentally causing severe burns. The person is most likely wearing clothes made of :

Why is aluminium foil is used in packing food.

Fractional distillation is used in separation of crude oil instead of simple distillation. Why?

What is homogeneous and heterogeneous mixtures

Who is considered as the "Father of Rayon"?

The ability of a substance to be dissolved in a solvent, at a given temperature, is known as __________.

What is the term given to the salt of monobasic nitric acid?

When nitric acid HNO3 reacts with metals, hydrogen gas is not observed because

Deionised water is obtained by

What type of oxides are formed : (a) when metals combine with oxygen ? (b) when non-metals combine with oxygen ?

Name the first fully synthetic fibre.

The smell of hot sizzling food reaches several metres away, but to get the smell from cold food, we have to go close. Which of the following reason best explains the given observation?

Write a word equation for the reaction of magnesium with oxygen.

Properties of Hydrogen resembles from which of the following elements

Hydrogen and oxygen are very reactive elements but why do they form water when mixed together?

A mixture of camphor and salt can be separated by the process of ___.

Which among the following will have the highest increase in temperature for the same amount of heat?

Question 5 (c) Tick True/False against the following statements : Coke is the purest form of carbon.

Which of the following metals is/are stored in kerosene oil?

A metal X reacts with oxygen gas to form an amphoteric oxide. Identify the metal. Recall that amphoteric oxides show both acidic and basic behaviour. X+O2→Amphoteric Oxide

Does hydrogen support combustion? If not then why??

Matter is defined as anything that occupies _________ and has _________.

XCl2 is the chloride of a metal X. State the formula of its hydroxide and sulphate

Which metals given below can be used for making bronze?

Matter is defined as anything that occupies _ and has _.