7248 + Interview Questions in Chemistry Page 140 InterviewSolution

6951.	Who among the following should wear melamine coated clothes?
Answer» Who among the following should wear melamine coated clothes?

Discussion

6952.	What is Valency of number and the difference when a number is written above a symbol (superscript) or below?
Answer» What is Valency of number and the difference when a number is written above a symbol (superscript) or below?

Discussion

6953.	Identify the non-metal which exists in liquid state from the options given below
Answer» Identify the non-metal which exists in liquid state from the options given below

Discussion

6954.	Name the two gases from which water is formed. What is the chemical composition of these two gases in water ? Give the molecular formula of water.
Answer» Name the two gases from which water is formed. What is the chemical composition of these two gases in water ? Give the molecular formula of water.

Discussion

6955.	Match the correct order of elements to corresponding to the atomic structure.
Answer» Match the correct order of elements to corresponding to the atomic structure.

6955.

Match the correct order of elements to corresponding to the atomic structure.

Answer»

Match the correct order of elements to corresponding to the atomic structure.

Discussion

6956.	If valence electrons of an atom are 2, then:
Answer» If valence electrons of an atom are 2, then:

Discussion

6957.	The process in which metals are extracted from their ores by heating them beyond the melting point is called
Answer» The process in which metals are extracted from their ores by heating them beyond the melting point is called

Discussion

6958.	What is ignition temperature? [2 MARKS]
Answer» What is ignition temperature? [2 MARKS]

Discussion

6959.	Which of the following reaction is double displacement reaction?
Answer» Which of the following reaction is double displacement reaction?

Discussion

6960.	One day Srishti and her mother were cooking, suddenly fire broke out in kitchen and there was no fire extinguisher in the house. Everyone in the house were scared of the fire but Srishti did an intelligent thing . She took some dry substance and throw them on the fire. What do you think is the dry substance?
Answer» One day Srishti and her mother were cooking, suddenly fire broke out in kitchen and there was no fire extinguisher in the house. Everyone in the house were scared of the fire but Srishti did an intelligent thing . She took some dry substance and throw them on the fire. What do you think is the dry substance?

6960.

One day Srishti and her mother were cooking, suddenly fire broke out in kitchen and there was no fire extinguisher in the house. Everyone in the house were scared of the fire but Srishti did an intelligent thing . She took some dry substance and throw them on the fire. What do you think is the dry substance?

Answer»

One day Srishti and her mother were cooking, suddenly fire broke out in kitchen and there was no fire extinguisher in the house. Everyone in the house were scared of the fire but Srishti did an intelligent thing . She took some dry substance and throw them on the fire. What do you think is the dry substance?

Discussion

6961.	To make a saturated solution, 15 g of sodium chloride is dissolved in 185g of water at 293K. The Concentration (in mass/mass %) of solution at this temperature is:
Answer» To make a saturated solution, 15 g of sodium chloride is dissolved in 185g of water at 293K. The Concentration (in mass/mass %) of solution at this temperature is:

Discussion

6962.	Which of the following is not an air pollutant? (a) Sulphur dioxide (b) Sewage (c) CFCs (d) SPM
Answer» Which of the following is not an air pollutant? (a) Sulphur dioxide (b) Sewage (c) CFCs (d) SPM

6962.

Which of the following is not an air pollutant? (a) Sulphur dioxide (b) Sewage (c) CFCs (d) SPM

Answer»

Which of the following is not an air pollutant?

(a) Sulphur dioxide

(b) Sewage

(c) CFCs

(d) SPM

Discussion

6963.	Question 5 (a) State the following statement is True or False: Fossil fuels can be made in the laboratory.
Answer» Question 5 (a) State the following statement is True or False: Fossil fuels can be made in the laboratory.

Discussion

6964.	Which gas is liberated in the above reaction?
Answer» Which gas is liberated in the above reaction?

Discussion

6965.	Solid H2O2 has non planar and non linear structure based on
Answer» Solid $H_{2}$ $O_{2}$ has non planar and non linear structure based on

Discussion

6966.	Choose the correct option:
Answer» Choose the correct option:

Discussion

6967.	___ is used to remove colouring matter from sugar in the sugar industry.
Answer» ___ is used to remove colouring matter from sugar in the sugar industry.

Discussion

6968.	Molecules of solid can only vibrate about their mean positions.Why?Explain the same for gases and liquids.
Answer» Molecules of solid can only vibrate about their mean positions.Why?Explain the same for gases and liquids.

Discussion

6969.	CuSO4 (aq) + Zn (S) → Cu (S) + ZnSO4 (aq) is an example of
Answer» CuSO_{4 (aq)} + Zn_(S) → Cu (S) + ZnSO₄ _(aq) is an example of

Discussion

6970.	The formula of bleaching powder is:
Answer» The formula of bleaching powder is:

Discussion

6971.	Identify the properties of a base
Answer» Identify the properties of a base

Discussion

6972.	Give reasons for the following : (a) An excess of carbon dioxide increases the temperature of the earth. (b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires. (c) Solid carbon dioxide is used for the refrigeration of food.
Answer» Give reasons for the following : (a) An excess of carbon dioxide increases the temperature of the earth. (b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires. (c) Solid carbon dioxide is used for the refrigeration of food.

6972.

Give reasons for the following : (a) An excess of carbon dioxide increases the temperature of the earth. (b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires. (c) Solid carbon dioxide is used for the refrigeration of food.

Answer»

Give reasons for the following :

(a) An excess of carbon dioxide increases the temperature of the earth.

(b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires.

(c) Solid carbon dioxide is used for the refrigeration of food.

Discussion

6973.	A material that allows light to pass through it without significant distortion is known as:
Answer» A material that allows light to pass through it without significant distortion is known as:

Discussion

6974.	Why silver foil is used to decorate sweets ?
Answer» Why silver foil is used to decorate sweets ?

Discussion

6975.	Public transport should be preferred over private vehicles.Why? [3 MARKS]
Answer» Public transport should be preferred over private vehicles.Why? [3 MARKS]

Discussion

6976.	A rubber balloon filled with hydrogen gas is left free in air. Then, the balloon
Answer» A rubber balloon filled with hydrogen gas is left free in air. Then, the balloon

Discussion

6977.	A bullet of mass 100 g has attained a velocity of 1080 km h−1 towards the target. What would its kinetic energy be at that moment?
Answer» A bullet of mass $100 g$ has attained a velocity of $1080 k m h^{- 1}$ towards the target. What would its kinetic energy be at that moment?

Discussion

6978.	Identify the product that is produced by baking coal in a heated oven.
Answer» Identify the product that is produced by baking coal in a heated oven.

Discussion

6979.	An atom of an element (X) has its K, L and M shells filled with some electrons. It reacts with sodium metal to form a compound NaX. The number of electrons in the M shell of the atom (X) will be ___
Answer» An atom of an element (X) has its K, L and M shells filled with some electrons. It reacts with sodium metal to form a compound NaX. The number of electrons in the M shell of the atom (X) will be ___

Discussion

6980.	Slide to the correct value of x to balance the given equation. Fe2O3(s)+3H2(g)→2Fe(s)+xH2O(l)3
Answer» Slide to the correct value of x to balance the given equation. ${Fe}_{2} O_{3} (s) + 3 H_{2} (g) \to 2 Fe (s) + {xH}_{2} O (l)$ 3

Discussion

6981.	Acrylic is ___ .
Answer» Acrylic is ___ .

Discussion

6982.	What is fire and how is it different from air,water and air??
Answer» What is fire and how is it different from air,water and air??

Discussion

6983.	__ is defined as the combining capacity of an element.
Answer» __ is defined as the combining capacity of an element.

Discussion

6984.	Which of the following is an example of a decomposition reaction?
Answer» Which of the following is an example of a decomposition reaction?

6984.

Which of the following is an example of a decomposition reaction?

Answer»

Which of the following is an example of a decomposition reaction?

Discussion

6985.	What is a polymer
Answer» What is a polymer

Discussion

6986.	Which method can be used to separate petrol and water from their mixture?
Answer» Which method can be used to separate petrol and water from their mixture?

Discussion

6987.	The method that is used to obtain pure salt from a salt solution is
Answer» The method that is used to obtain pure salt from a salt solution is

Discussion

6988.	If naphthalene balls are kept at room temperature then it undergoes the phase transition. Which of the below mentioned is correct in regard to naphthalene balls:-
Answer» If naphthalene balls are kept at room temperature then it undergoes the phase transition. Which of the below mentioned is correct in regard to naphthalene balls:-

Discussion

6989.	Which air pollutant combines with the haemoglobin of our blood ?
Answer» Which air pollutant combines with the haemoglobin of our blood ?

Discussion

6990.	Biodiesel is seen as an important means of energy security in India. Which of the following are sources of Biodiesel. (1) Jatropha (2) Pongamia (3) Molasses (4) Fungi Code:
Answer» Biodiesel is seen as an important means of energy security in India. Which of the following are sources of Biodiesel. (1) Jatropha (2) Pongamia (3) Molasses (4) Fungi Code:

6990.

Biodiesel is seen as an important means of energy security in India. Which of the following are sources of Biodiesel. (1) Jatropha (2) Pongamia (3) Molasses (4) Fungi Code:

Answer»

Biodiesel is seen as an important means of energy security in India. Which of the following are sources of Biodiesel.

(1) Jatropha (2) Pongamia

(3) Molasses (4) Fungi

Code:

Discussion

6991.	The intermixing of two or more substances due to the motion of their particles in order to get a uniform mixture is called
Answer» The intermixing of two or more substances due to the motion of their particles in order to get a uniform mixture is called

Discussion

6992.	Write the electronic configuration of 19K40.
Answer» Write the electronic configuration of $_{19} K^{40}$ .

Discussion

6993.	Which group of letters is different from others? A. CBAED B. IJHGK C. SRQPT D. TVWYZ E. Other
Answer» Which group of letters is different from others? A. CBAED B. IJHGK C. SRQPT D. TVWYZ E. Other

Discussion

6994.	There are two boxes, one made of metal and the other made of wood,which are similar in appearance.How will find out which box is made of metal ?
Answer» There are two boxes, one made of metal and the other made of wood,which are similar in appearance.How will find out which box is made of metal ?

Discussion

6995.	Be is not readily attacked by acids because:
Answer» Be is not readily attacked by acids because:

Discussion

6996.	Identify the cloth materials that is/are mostly preferred for sportswear.
Answer» Identify the cloth materials that is/are mostly preferred for sportswear.

Discussion

6997.	What is the term given for the expression "where there is not enough of an oxidant to burn up all the fuel in an efficient manner"?
Answer» What is the term given for the expression "where there is not enough of an oxidant to burn up all the fuel in an efficient manner"?

Discussion

6998.	When a zinc strip is put in copper sulphate solution, after some time, a red brown coating is deposited on the zinc strip. This indicates:
Answer» When a zinc strip is put in copper sulphate solution, after some time, a red brown coating is deposited on the zinc strip. This indicates:

6998.

When a zinc strip is put in copper sulphate solution, after some time, a red brown coating is deposited on the zinc strip. This indicates:

Answer»

When a zinc strip is put in copper sulphate solution, after some time, a red brown coating is deposited on the zinc strip. This indicates:

Discussion

6999.	What are three postulates given by Bohr's model of the hydrogen atom?Explain them fully and clearly
Answer» What are three postulates given by Bohr's model of the hydrogen atom?Explain them fully and clearly

Discussion

7000.	Which property of the particles of matter is directly related to the temperature?
Answer» Which property of the particles of matter is directly related to the temperature?

Discussion

Explore topic-wise InterviewSolutions in .

Who among the following should wear melamine coated clothes?

What is Valency of number and the difference when a number is written above a symbol (superscript) or below?

Identify the non-metal which exists in liquid state from the options given below

Name the two gases from which water is formed. What is the chemical composition of these two gases in water ? Give the molecular formula of water.

Match the correct order of elements to corresponding to the atomic structure.

If valence electrons of an atom are 2, then:

The process in which metals are extracted from their ores by heating them beyond the melting point is called

What is ignition temperature? [2 MARKS]

Which of the following reaction is double displacement reaction?

To make a saturated solution, 15 g of sodium chloride is dissolved in 185g of water at 293K. The Concentration (in mass/mass %) of solution at this temperature is:

Which of the following is not an air pollutant? (a) Sulphur dioxide (b) Sewage (c) CFCs (d) SPM

Question 5 (a) State the following statement is True or False: Fossil fuels can be made in the laboratory.

Which gas is liberated in the above reaction?

Solid H2O2 has non planar and non linear structure based on

Choose the correct option:

___ is used to remove colouring matter from sugar in the sugar industry.

Molecules of solid can only vibrate about their mean positions.Why?Explain the same for gases and liquids.

CuSO4 (aq) + Zn (S) → Cu (S) + ZnSO4 (aq) is an example of

The formula of bleaching powder is:

Identify the properties of a base

Give reasons for the following : (a) An excess of carbon dioxide increases the temperature of the earth. (b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires. (c) Solid carbon dioxide is used for the refrigeration of food.

A material that allows light to pass through it without significant distortion is known as:

Why silver foil is used to decorate sweets ?

Public transport should be preferred over private vehicles.Why? [3 MARKS]

A rubber balloon filled with hydrogen gas is left free in air. Then, the balloon

A bullet of mass 100 g has attained a velocity of 1080 km h−1 towards the target. What would its kinetic energy be at that moment?

Identify the product that is produced by baking coal in a heated oven.

An atom of an element (X) has its K, L and M shells filled with some electrons. It reacts with sodium metal to form a compound NaX. The number of electrons in the M shell of the atom (X) will be ___

Slide to the correct value of x to balance the given equation. Fe2O3(s)+3H2(g)→2Fe(s)+xH2O(l)3

Acrylic is ___ .

What is fire and how is it different from air,water and air??

__ is defined as the combining capacity of an element.

Which of the following is an example of a decomposition reaction?

What is a polymer

Which method can be used to separate petrol and water from their mixture?

The method that is used to obtain pure salt from a salt solution is

If naphthalene balls are kept at room temperature then it undergoes the phase transition. Which of the below mentioned is correct in regard to naphthalene balls:-

Which air pollutant combines with the haemoglobin of our blood ?

Biodiesel is seen as an important means of energy security in India. Which of the following are sources of Biodiesel. (1) Jatropha (2) Pongamia (3) Molasses (4) Fungi Code:

The intermixing of two or more substances due to the motion of their particles in order to get a uniform mixture is called

Write the electronic configuration of 19K40.

Which group of letters is different from others? A. CBAED B. IJHGK C. SRQPT D. TVWYZ E. Other

There are two boxes, one made of metal and the other made of wood,which are similar in appearance.How will find out which box is made of metal ?

Be is not readily attacked by acids because:

Identify the cloth materials that is/are mostly preferred for sportswear.

What is the term given for the expression "where there is not enough of an oxidant to burn up all the fuel in an efficient manner"?

When a zinc strip is put in copper sulphate solution, after some time, a red brown coating is deposited on the zinc strip. This indicates:

What are three postulates given by Bohr's model of the hydrogen atom?Explain them fully and clearly

Which property of the particles of matter is directly related to the temperature?