5083 + Interview Questions in Chemistry Page 73 InterviewSolution

3601.	Which of the choices can best fit in the boxes I and II given below?
Answer» Which of the choices can best fit in the boxes I and II given below?

Discussion

3602.	When an acid reacts with a base, what happens to the temperature of the surroundings?
Answer» When an acid reacts with a base, what happens to the temperature of the surroundings?

Discussion

3603.	Question 17 Place the following statements in a proper order to form a meaningful paragraph. (a) Which in turn decreases the seepage of rainwater into the ground. (b) This decreases the open areas like parks and playgrounds. (c) Increasing population create demand for construction of houses, shops, offices, roads and pavements. (d) This results in depletion of water table and creates scarcity of more water.
Answer» Question 17 Place the following statements in a proper order to form a meaningful paragraph. (a) Which in turn decreases the seepage of rainwater into the ground. (b) This decreases the open areas like parks and playgrounds. (c) Increasing population create demand for construction of houses, shops, offices, roads and pavements. (d) This results in depletion of water table and creates scarcity of more water.

3603.

Question 17 Place the following statements in a proper order to form a meaningful paragraph. (a) Which in turn decreases the seepage of rainwater into the ground. (b) This decreases the open areas like parks and playgrounds. (c) Increasing population create demand for construction of houses, shops, offices, roads and pavements. (d) This results in depletion of water table and creates scarcity of more water.

Answer»

Question 17

Place the following statements in a proper order to form a meaningful paragraph.
(a) Which in turn decreases the seepage of rainwater into the ground.
(b) This decreases the open areas like parks and playgrounds.
(c) Increasing population create demand for construction of houses, shops, offices, roads and pavements.
(d) This results in depletion of water table and creates scarcity of more water.

Discussion

3604.	Question 10 On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution? (a) Basic (b) Either acidic or basic (c) Either acidic or neutral (d) Either basic or neutral
Answer» Question 10 On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution? (a) Basic (b) Either acidic or basic (c) Either acidic or neutral (d) Either basic or neutral

3604.

Question 10 On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution? (a) Basic (b) Either acidic or basic (c) Either acidic or neutral (d) Either basic or neutral

Answer»

Question 10

On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
(a) Basic
(b) Either acidic or basic
(c) Either acidic or neutral
(d) Either basic or neutral

Discussion

3605.	Why are cooking utensils made up of metals?
Answer» Why are cooking utensils made up of metals?

Discussion

3606.	The positively charged and negatively charged ions are respectively known as _______ and _______.
Answer» The positively charged and negatively charged ions are respectively known as _______ and _______.

Discussion

3607.	One day you and your friends were discussing about the matter. He believes that matter is continuous like a block. Initially you have also agreed with him but later one observation changed your perception about matter. Now you believe it is made up of discrete particles. The observation was
Answer» One day you and your friends were discussing about the matter. He believes that matter is continuous like a block. Initially you have also agreed with him but later one observation changed your perception about matter. Now you believe it is made up of discrete particles. The observation was

Discussion

3608.	Milk of magnesia is ___ in nature.
Answer» Milk of magnesia is ___ in nature.

Discussion

3609.	Can matter undergo chemical changes on heating?
Answer» Can matter undergo chemical changes on heating?

Discussion

3610.	For construction purposes, which cement is the most commonly used cement?
Answer» For construction purposes, which cement is the most commonly used cement?

Discussion

3611.	Water scarcity and its effectes
Answer» Water scarcity and its effectes

Discussion

3612.	Which allotrope of carbon is also called a solid lubricant?
Answer» Which allotrope of carbon is also called a solid lubricant?

Discussion

3613.	Two molecules of hydrogen and one molecule of oxygen reacts to give __ molecule(s) of water.
Answer» Two molecules of hydrogen and one molecule of oxygen reacts to give __ molecule(s) of water.

Discussion

3614.	When blue litmus paper is dipped into the water, the colour of litmus paper remains same. Similarly, when a red litmus paper is dipped into the water, the colour remains same. By the above observation, we can conclude that:
Answer» When blue litmus paper is dipped into the water, the colour of litmus paper remains same. Similarly, when a red litmus paper is dipped into the water, the colour remains same. By the above observation, we can conclude that:

Discussion

3615.	What is the difference between acids and bases?
Answer» What is the difference between acids and bases?

Discussion

3616.	a) What are salts? How are they formed from acids and bases? Are they acidic, basic or neutral? Give examples. [3 MARKS] b) Give names of the acids found in the following substances: i) Vinegar ii) Curd. [2 MARKS]
Answer» a) What are salts? How are they formed from acids and bases? Are they acidic, basic or neutral? Give examples. [3 MARKS] b) Give names of the acids found in the following substances: i) Vinegar ii) Curd. [2 MARKS]

Discussion

3617.	1. What is the action of red litmus on (i) Dry ammonia gas (ii) solution of ammonia gas in water ? 2. Explain how acid rain is one of the major cause for discoloring of Taj Mahal. [3 MARKS]
Answer» 1. What is the action of red litmus on (i) Dry ammonia gas (ii) solution of ammonia gas in water ? 2. Explain how acid rain is one of the major cause for discoloring of Taj Mahal. [3 MARKS]

Discussion

3618.	Rusting is a ………… process because it….........metals
Answer» Rusting is a ………… process because it….........metals

Discussion

3619.	Moving forward in the zoo, he found a place where the forest was cut down to construct a canteen and a park. He asked his grandfather that what are the various steps which we should take to get back the same amount of forest cover which we used to have years ago?
Answer» Moving forward in the zoo, he found a place where the forest was cut down to construct a canteen and a park. He asked his grandfather that what are the various steps which we should take to get back the same amount of forest cover which we used to have years ago?

Discussion

3620.	Which of the following on reaction with acid will produce CO2?
Answer» Which of the following on reaction with acid will produce ${CO}_{2}$ ?

Discussion

3621.	What is the graph (concentration vs time) of zero order reaction look like?
Answer» What is the graph (concentration vs time) of zero order reaction look like?

Discussion

3622.	In wool industry, often sorters get affected by sorter's disease. This disease is caused by:
Answer» In wool industry, often sorters get affected by sorter's disease. This disease is caused by:

Discussion

3623.	For reaction: A + B → Products, the rate if the reaction at various concentration are given below: Expt. No.(A)(B)Rate10.20.2220.20.4430.60.436
Answer» For reaction: A + B $\to$ Products, the rate if the reaction at various concentration are given below: $\begin{matrix} E x p t . N o . & (A) & (B) & R a t e 1 & 0.2 & 0.2 & 2 2 & 0.2 & 0.4 & 4 3 & 0.6 & 0.4 & 36 \end{matrix}$

Discussion

3624.	Name a non-metal having a very high melting point.
Answer» Name a non-metal having a very high melting point.

Discussion

3625.	2Na+2H2O→xNaOH+H2 The value of x is:
Answer» $2 N a + 2 H_{2} O \to x N a O H + H_{2}$ The value of x is:

3625.

2Na+2H2O→xNaOH+H2 The value of x is:

Answer»

$2 N a + 2 H_{2} O \to x N a O H + H_{2}$

The value of x is:

Discussion

3626.	do all worms produce silk,if not why?
Answer» do all worms produce silk,if not why?

Discussion

3627.	Which among the following has more P atoms? (a) - P4 (b) - 2P Mention a or b. __
Answer» Which among the following has more P atoms? (a) - $P_{4}$ (b) - $2 P$ Mention a or b. __

Discussion

3628.	Is removing of water from compounds like CuSO4·10H2O a physical or chemical change?
Answer» Is removing of water from compounds like CuSO₄·10H₂O a physical or chemical change?

Discussion

3629.	Which soil has the highest rate of percolation?
Answer» Which soil has the highest rate of percolation?

Discussion

3630.	Wool industry job risky why. Is it effected by both bacillus Anthrax's and Escherichia coli
Answer» Wool industry job risky why. Is it effected by both bacillus Anthrax's and Escherichia coli

Discussion

3631.	___ is the property by which the molecules at the surface are attracted by the molecules that are below.
Answer» ___ is the property by which the molecules at the surface are attracted by the molecules that are below.

Discussion

3632.	The distribution of electrons in an orbit is obtained by ______.
Answer» The distribution of electrons in an orbit is obtained by ______.

Discussion

3633.	A colloid is a __ (heterogeneous/homogeneous) mixture and its components can be separated by the technique known as centrifugation.
Answer» A colloid is a __ (heterogeneous/homogeneous) mixture and its components can be separated by the technique known as centrifugation.

Discussion

3634.	Sodium bicarbonate is added to water what would happen
Answer» Sodium bicarbonate is added to water what would happen

Discussion

3635.	You have one glass of water and some sugar and sand. How will you create a homogenous mixture
Answer» You have one glass of water and some sugar and sand. How will you create a homogenous mixture

Discussion

3636.	Question 2(d) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron and rust are the same substances.
Answer» Question 2(d) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron and rust are the same substances.

Discussion

3637.	At which stage, the silk moth cuts open the cocoon?
Answer» At which stage, the silk moth cuts open the cocoon?

Discussion

3638.	Name and explain the two main processes used to convert yarn into fabric. [3 MARKS]
Answer» Name and explain the two main processes used to convert yarn into fabric. [3 MARKS]

Discussion

3639.	Under which category does alloy fall?
Answer» Under which category does alloy fall?

Discussion

3640.	Describe the working of a wastewater treatment plant. [5 MARKS]
Answer» Describe the working of a wastewater treatment plant. [5 MARKS]

Discussion

3641.	Bad conductor of electricity is
Answer» Bad conductor of electricity is

3641.

Bad conductor of electricity is

Answer»

Bad conductor of electricity is

Discussion

3642.	The name given to t-all trees which look like roof over other plants in the forest is called __.
Answer» The name given to t-all trees which look like roof over other plants in the forest is called __.

Discussion

3643.	Which of the following observation is/are the signs of depletion of groundwater?
Answer» Which of the following observation is/are the signs of depletion of groundwater?

Discussion

3644.	The number of atoms present in 4.25 grams of NH3 is approximately:
Answer» The number of atoms present in 4.25 grams of NH3 is approximately:

Discussion

3645.	___ gives the seeds better chance of survival.
Answer» ___ gives the seeds better chance of survival.

Discussion

3646.	Balance between oxygen and carbon dioxide in atmosphere is depicted by the following figure. Match the numbers with the correct gas name.
Answer» Balance between oxygen and carbon dioxide in atmosphere is depicted by the following figure. Match the numbers with the correct gas name.

3646.

Balance between oxygen and carbon dioxide in atmosphere is depicted by the following figure. Match the numbers with the correct gas name.

Answer»

Balance between oxygen and carbon dioxide in atmosphere is depicted by the following figure. Match the numbers with the correct gas name.

Discussion

3647.	Question 18 Two glass jars A and B are filled with carbon dioxide and oxygen gases, respectively. In each jar, a lighted candle is placed simultaneously. In which jar will the candle remain lighted for a longer time and why?
Answer» Question 18 Two glass jars A and B are filled with carbon dioxide and oxygen gases, respectively. In each jar, a lighted candle is placed simultaneously. In which jar will the candle remain lighted for a longer time and why?

Discussion

3648.	Find the sentence where the verb has been used incorrectly.
Answer» Find the sentence where the verb has been used incorrectly.

Discussion

3649.	An indicator responds to acid or base by:
Answer» An indicator responds to acid or base by:

Discussion

3650.	Which statement is correct about the following reaction? ZnO + CO → Zn + CO2
Answer» Which statement is correct about the following reaction? ZnO + CO → Zn + $C O_{2}$

Discussion

Explore topic-wise InterviewSolutions in .

Which of the choices can best fit in the boxes I and II given below?

When an acid reacts with a base, what happens to the temperature of the surroundings?

Question 10 On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution? (a) Basic (b) Either acidic or basic (c) Either acidic or neutral (d) Either basic or neutral

Why are cooking utensils made up of metals?

The positively charged and negatively charged ions are respectively known as _______ and _______.

One day you and your friends were discussing about the matter. He believes that matter is continuous like a block. Initially you have also agreed with him but later one observation changed your perception about matter. Now you believe it is made up of discrete particles. The observation was

Milk of magnesia is ___ in nature.

Can matter undergo chemical changes on heating?

For construction purposes, which cement is the most commonly used cement?

Water scarcity and its effectes

Which allotrope of carbon is also called a solid lubricant?

Two molecules of hydrogen and one molecule of oxygen reacts to give __ molecule(s) of water.

When blue litmus paper is dipped into the water, the colour of litmus paper remains same. Similarly, when a red litmus paper is dipped into the water, the colour remains same. By the above observation, we can conclude that:

What is the difference between acids and bases?

a) What are salts? How are they formed from acids and bases? Are they acidic, basic or neutral? Give examples. [3 MARKS] b) Give names of the acids found in the following substances: i) Vinegar ii) Curd. [2 MARKS]

1. What is the action of red litmus on (i) Dry ammonia gas (ii) solution of ammonia gas in water ? 2. Explain how acid rain is one of the major cause for discoloring of Taj Mahal. [3 MARKS]

Rusting is a ………… process because it….........metals

Moving forward in the zoo, he found a place where the forest was cut down to construct a canteen and a park. He asked his grandfather that what are the various steps which we should take to get back the same amount of forest cover which we used to have years ago?

Which of the following on reaction with acid will produce CO2?

What is the graph (concentration vs time) of zero order reaction look like?

In wool industry, often sorters get affected by sorter's disease. This disease is caused by:

For reaction: A + B → Products, the rate if the reaction at various concentration are given below: Expt. No.(A)(B)Rate10.20.2220.20.4430.60.436

Name a non-metal having a very high melting point.

2Na+2H2O→xNaOH+H2 The value of x is:

do all worms produce silk,if not why?

Which among the following has more P atoms? (a) - P4 (b) - 2P Mention a or b. __

Is removing of water from compounds like CuSO​​​4​​·10H2O a physical or chemical change?

Which soil has the highest rate of percolation?

Wool industry job risky why. Is it effected by both bacillus Anthrax's and Escherichia coli

___ is the property by which the molecules at the surface are attracted by the molecules that are below.

The distribution of electrons in an orbit is obtained by ______.

A colloid is a __ (heterogeneous/homogeneous) mixture and its components can be separated by the technique known as centrifugation.

Sodium bicarbonate is added to water what would happen

You have one glass of water and some sugar and sand. How will you create a homogenous mixture

Question 2(d) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron and rust are the same substances.

At which stage, the silk moth cuts open the cocoon?

Name and explain the two main processes used to convert yarn into fabric. [3 MARKS]

Under which category does alloy fall?

Describe the working of a wastewater treatment plant. [5 MARKS]

Bad conductor of electricity is

The name given to t-all trees which look like roof over other plants in the forest is called __.

Which of the following observation is/are the signs of depletion of groundwater?

The number of atoms present in 4.25 grams of NH3 is approximately:

___ gives the seeds better chance of survival.

Balance between oxygen and carbon dioxide in atmosphere is depicted by the following figure. Match the numbers with the correct gas name.

Question 18 Two glass jars A and B are filled with carbon dioxide and oxygen gases, respectively. In each jar, a lighted candle is placed simultaneously. In which jar will the candle remain lighted for a longer time and why?

Find the sentence where the verb has been used incorrectly.

An indicator responds to acid or base by:

Which statement is correct about the following reaction? ZnO + CO → Zn + CO2

The positively charged and negatively charged ions are respectively known as _ and _.

Is removing of water from compounds like CuSO4·10H2O a physical or chemical change?