7248 + Interview Questions in Chemistry Page 134 InterviewSolution

6651.	What is the valency of a stable atom
Answer» What is the valency of a stable atom

Discussion

6652.	What are alkaline metals?
Answer» What are alkaline metals?

Discussion

6653.	The government project launched to save Ganga from contamination was _____
Answer» The government project launched to save Ganga from contamination was _____

Discussion

6654.	Terrycot is made by mixing two type of fibres ? Write the names of the fibres ?
Answer» Terrycot is made by mixing two type of fibres ? Write the names of the fibres ?

Discussion

6655.	The term water-pollution can be defined in several ways. Which of the following statements does not give the correct definition?
Answer» The term water-pollution can be defined in several ways. Which of the following statements does not give the correct definition?

Discussion

6656.	Which is the most electropositive element among the following?
Answer» Which is the most electropositive element among the following?

Discussion

6657.	Which is the hardest variety of coal?
Answer» Which is the hardest variety of coal?

Discussion

6658.	Causes and harmful effects of a) carbon monoxide, b) sulphur dioxide, C) oxides of nitrogen
Answer» Causes and harmful effects of a) carbon monoxide, b) sulphur dioxide, C) oxides of nitrogen

Discussion

6659.	While making a tester to detect electric currents through liquids, Ritika replaced the cell (used in tester to detect currents through metals) with a battery because
Answer» While making a tester to detect electric currents through liquids, Ritika replaced the cell (used in tester to detect currents through metals) with a battery because

Discussion

6660.	How to write the formation of ions ?
Answer» How to write the formation of ions ?

Discussion

6661.	How we can prepare charcoal in our home
Answer» How we can prepare charcoal in our home

Discussion

6662.	How do metals react with dilute acids ? Explain with the help of an example.
Answer» How do metals react with dilute acids ? Explain with the help of an example.

Discussion

6663.	What happens when sugar is added to water?
Answer» What happens when sugar is added to water?

Discussion

6664.	The molecular formula of a compound is C2X6. X is unknown. If the mass ratio of C to X is 4:1 in the compound, find X.
Answer» The molecular formula of a compound is $C_{2} X_{6}$ . X is unknown. If the mass ratio of C to X is 4:1 in the compound, find X.

Discussion

6665.	Which is the second most abundant gas present in the atmosphere?
Answer» Which is the second most abundant gas present in the atmosphere?

Discussion

6666.	1 H.P is equal to
Answer» 1 H.P is equal to

Discussion

6667.	Which one of the following type of cell would be most commonly found in a rechargeable torchlight?
Answer» Which one of the following type of cell would be most commonly found in a rechargeable torchlight?

Discussion

6668.	A girl of mass 40 kg is moving with a speed 20 ms−1. What is her kinetic energy?.
Answer» A girl of mass $40 k g$ is moving with a speed $20 m s^{- 1}$ . What is her kinetic energy?.

Discussion

6669.	Diamond can be considered as a resource for:
Answer» Diamond can be considered as a resource for:

Discussion

6670.	Non metallic oxides are:
Answer» Non metallic oxides are:

Discussion

6671.	What are the five uses of Plaster of Paris? [5 MARKS]
Answer» What are the five uses of Plaster of Paris? [5 MARKS]

Discussion

6672.	When an iron nail is dipped in the copper oxide + acetic + salt solution, it acquires a thin copper layer. Why does this happen? Write the chemical and word equation.
Answer» When an iron nail is dipped in the copper oxide + acetic + salt solution, it acquires a thin copper layer. Why does this happen? Write the chemical and word equation.

Discussion

6673.	We observe that some portion of wax (in a candle) melts and another portion of it is used in producing heat and light. Statement A: The melting of wax is a physical change Statement B: The burning of wax for the production of heat and light is a chemical change.
Answer» We observe that some portion of wax (in a candle) melts and another portion of it is used in producing heat and light. Statement A: The melting of wax is a physical change Statement B: The burning of wax for the production of heat and light is a chemical change.

Discussion

6674.	Gold (Au) has a unique property because of which 1 g of gold can be drawn into a wire up to 2 km. This property of gold is known as___.
Answer» Gold (Au) has a unique property because of which 1 g of gold can be drawn into a wire up to 2 km. This property of gold is known as___.

Discussion

6675.	Which of the following is/are correct for plastics?
Answer» Which of the following is/are correct for plastics?

Discussion

6676.	Write a short note on watershed management. Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS] Figure (a) Fig (b)
Answer» Write a short note on watershed management. Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS] Figure (a) Fig (b)

Discussion

6677.	A mixture of oil and water is called _________.
Answer» A mixture of oil and water is called _________.

Discussion

6678.	The color of the soaps are always different but the foam of the soaps are always same but why and how
Answer» The color of the soaps are always different but the foam of the soaps are always same but why and how

Discussion

6679.	Describe the various zones of a candle flame.
Answer» Describe the various zones of a candle flame.

Discussion

6680.	Which of the following is a water-related disease?
Answer» Which of the following is a water-related disease?

Discussion

6681.	State one way in which the air pollution caused by the burning of fossil fuels in transport and industry can kill the fish living in a lake and one way in which the water pollution caused by an agriculture acitivity can kill fish living in the same lake.
Answer» State one way in which the air pollution caused by the burning of fossil fuels in transport and industry can kill the fish living in a lake and one way in which the water pollution caused by an agriculture acitivity can kill fish living in the same lake.

Discussion

6682.	Carbon dioxide constitutes about ________ % by volume in air.
Answer» Carbon dioxide constitutes about ________ % by volume in air.

Discussion

6683.	Statements: K T, S & K, T © R Conclusions: a) S ! R b) T ! S
Answer» Statements: K T, S & K, T © R Conclusions: a) S ! R b) T ! S

6683.

Statements: K T, S & K, T © R Conclusions: a) S ! R b) T ! S

Answer»

Statements: K T, S & K, T © R

Conclusions:

a) S ! R

b) T ! S

Discussion

6684.	___________ is the second largest component of air, constituting almost 21% volume of air.
Answer» ___________ is the second largest component of air, constituting almost 21% volume of air.

Discussion

6685.	Which gas is produced due to incomplete burning of fuels?
Answer» Which gas is produced due to incomplete burning of fuels?

Discussion

6686.	Question 8 Which of the following represents the correct match for items in Column A with those in Column B. Column AColumn BI. Nylon(i) ThermoplasticII. PVC(ii) Thermosetting plasticIII. Bakelite(iii) Fibre (a) I-(ii), II-(iii), III-(i) (b) I-(iii), II-(i), III-(ii) (c) I-(ii), II-(i), III-(iii) (d) I-(iii), II-(ii), III-(i)
Answer» Question 8 Which of the following represents the correct match for items in Column A with those in Column B. $\begin{matrix} Column A & Column B I. Nylon & (i) Thermoplastic II. PVC & (ii) Thermosetting plastic III. Bakelite & (iii) Fibre \end{matrix}$ (a) I-(ii), II-(iii), III-(i) (b) I-(iii), II-(i), III-(ii) (c) I-(ii), II-(i), III-(iii) (d) I-(iii), II-(ii), III-(i)

Discussion

6687.	Which of the following variety of coal is a heterogeneous mixture of decomposed plant material that is accumulated in water and in the absence of air?
Answer» Which of the following variety of coal is a heterogeneous mixture of decomposed plant material that is accumulated in water and in the absence of air?

Discussion

6688.	Where is there a low concentration of dye?
Answer» Where is there a low concentration of dye?

6688.

Where is there a low concentration of dye?

Answer»

Where is there a low concentration of dye?

Discussion

6689.	The term we use to describe water and undissolved material in it is __________.
Answer» The term we use to describe water and undissolved material in it is __________.

Discussion

6690.	The aqueous solution of an ___ is slippery like a soap.
Answer» The aqueous solution of an ___ is slippery like a soap.

Discussion

6691.	Why do we need to conserve fossil fuels?
Answer» Why do we need to conserve fossil fuels?

Discussion

6692.	Match the terms of column A correctly with the phrases given in column B : AB(i)Polyester(a) Prepared by using wood pulp(ii)Teflon(b) Used for making parachutes(iii)Rayon (c) Used to make non-stick cookware(iv)Nylon(d) Fabrics do not wrinkle easily
Answer» Match the terms of column A correctly with the phrases given in column B : $\begin{matrix} A & B (i) & P o l y e s t e r & (a) Prepared by using wood pulp (i i) & T e f l o n & (b) Used for making parachutes (i i i) & R a y o n & (c) Used to make non-stick cookware (i v) & N y l o n & (d) Fabrics do not wrinkle easily \end{matrix}$

6692.

Match the terms of column A correctly with the phrases given in column B : AB(i)Polyester(a) Prepared by using wood pulp(ii)Teflon(b) Used for making parachutes(iii)Rayon (c) Used to make non-stick cookware(iv)Nylon(d) Fabrics do not wrinkle easily

Answer»

Match the terms of column A correctly with the phrases given in column B :

$\begin{matrix} A & B (i) & P o l y e s t e r & (a) Prepared by using wood pulp (i i) & T e f l o n & (b) Used for making parachutes (i i i) & R a y o n & (c) Used to make non-stick cookware (i v) & N y l o n & (d) Fabrics do not wrinkle easily \end{matrix}$

Discussion

6693.	Heavy motor vehicles like trucks and tractors run on:
Answer» Heavy motor vehicles like trucks and tractors run on:

Discussion

6694.	Which is more concentrated 1M or 1m solution?
Answer» Which is more concentrated 1M or 1m solution?

Discussion

6695.	A bullet of mass 100 g has shot a speed of 108 km/hr towards the target. What would be its kinetic energy?
Answer» A bullet of mass $100 g$ has shot a speed of $108 k m / h r$ towards the target. What would be its kinetic energy?

6695.

A bullet of mass 100 g has shot a speed of 108 km/hr towards the target. What would be its kinetic energy?

Answer»

A bullet of mass $100 g$ has shot a speed of $108 k m / h r$ towards the target. What would be its kinetic energy?

Discussion

6696.	Complete the following reaction given that electric spark was used to make the two gases react: 2H2 + O2 ⇌ ___
Answer» Complete the following reaction given that electric spark was used to make the two gases react: $2 H_{2}$ + $O_{2}$ $⇌$ ___

6696.

Complete the following reaction given that electric spark was used to make the two gases react: 2H2 + O2 ⇌ ___

Answer»

Complete the following reaction given that electric spark was used to make the two gases react:

$2 H_{2}$ + $O_{2}$ $⇌$ ___

Discussion

6697.	An open rectangular tank of dimensions 5 m × 4 m × 3 m contains water upto height of 2 m. If the tank is kept closed at the top initially and the vessel is accelerated horizontally with an acceleration of a0=9 m/s2, the gauge pressure at the bottom of the rear wall of the tank is x×104 Pa. The value of x is . (Answer upto two digits after the decimal point.)
Answer» An open rectangular tank of dimensions 5 $m$ × 4 $m$ × 3 $m$ contains water upto height of 2 $m$ . If the tank is kept closed at the top initially and the vessel is accelerated horizontally with an acceleration of $a_{0} = 9 m / s^{2}$ , the gauge pressure at the bottom of the rear wall of the tank is $x \times 10^{4}$ Pa. The value of x is . (Answer upto two digits after the decimal point.)

Discussion

6698.	Which of the following metals does not react with cold water?
Answer» Which of the following metals does not react with cold water?

Discussion

6699.	Intermixing of particles of two different types of matter is called as ______.
Answer» Intermixing of particles of two different types of matter is called as ______.

Discussion

6700.	Write five differences between properties of acids and bases. [5 MARKS]
Answer» Write five differences between properties of acids and bases. [5 MARKS]

Discussion

Explore topic-wise InterviewSolutions in .

What is the valency of a stable atom

What are alkaline metals?

The government project launched to save Ganga from contamination was _____

Terrycot is made by mixing two type of fibres ? Write the names of the fibres ?

The term water-pollution can be defined in several ways. Which of the following statements does not give the correct definition?

Which is the most electropositive element among the following?

Which is the hardest variety of coal?

Causes and harmful effects of a) carbon monoxide, b) sulphur dioxide, C) oxides of nitrogen

While making a tester to detect electric currents through liquids, Ritika replaced the cell (used in tester to detect currents through metals) with a battery because

How to write the formation of ions ?

How we can prepare charcoal in our home

How do metals react with dilute acids ? Explain with the help of an example.

What happens when sugar is added to water?

The molecular formula of a compound is C2X6. X is unknown. If the mass ratio of C to X is 4:1 in the compound, find X.

Which is the second most abundant gas present in the atmosphere?

1 H.P is equal to

Which one of the following type of cell would be most commonly found in a rechargeable torchlight?

A girl of mass 40 kg is moving with a speed 20 ms−1. What is her kinetic energy?.

Diamond can be considered as a resource for:

Non metallic oxides are:

What are the five uses of Plaster of Paris? [5 MARKS]

When an iron nail is dipped in the copper oxide + acetic + salt solution, it acquires a thin copper layer. Why does this happen? Write the chemical and word equation.

We observe that some portion of wax (in a candle) melts and another portion of it is used in producing heat and light. Statement A: The melting of wax is a physical change Statement B: The burning of wax for the production of heat and light is a chemical change.

Gold (Au) has a unique property because of which 1 g of gold can be drawn into a wire up to 2 km. This property of gold is known as___.

Which of the following is/are correct for plastics?

Write a short note on watershed management. Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS] Figure (a) Fig (b)

A mixture of oil and water is called _________.

The color of the soaps are always different but the foam of the soaps are always same but why and how

Describe the various zones of a candle flame.

Which of the following is a water-related disease?

State one way in which the air pollution caused by the burning of fossil fuels in transport and industry can kill the fish living in a lake and one way in which the water pollution caused by an agriculture acitivity can kill fish living in the same lake.

Carbon dioxide constitutes about ________ % by volume in air.

Statements: K T, S &amp; K, T © R Conclusions: a) S ! R b) T ! S

___________ is the second largest component of air, constituting almost 21% volume of air.

Which gas is produced due to incomplete burning of fuels?

Which of the following variety of coal is a heterogeneous mixture of decomposed plant material that is accumulated in water and in the absence of air?

Where is there a low concentration of dye?

The term we use to describe water and undissolved material in it is __________.

The aqueous solution of an ___ is slippery like a soap.

Why do we need to conserve fossil fuels?

Match the terms of column A correctly with the phrases given in column B : AB(i)Polyester(a) Prepared by using wood pulp(ii)Teflon(b) Used for making parachutes(iii)Rayon (c) Used to make non-stick cookware(iv)Nylon(d) Fabrics do not wrinkle easily

Heavy motor vehicles like trucks and tractors run on:

Which is more concentrated 1M or 1m solution?

A bullet of mass 100 g has shot a speed of 108 km/hr towards the target. What would be its kinetic energy?

Complete the following reaction given that electric spark was used to make the two gases react: 2H2 + O2 ⇌ ___

Which of the following metals does not react with cold water?

Intermixing of particles of two different types of matter is called as ______.

Write five differences between properties of acids and bases. [5 MARKS]

Statements: K T, S & K, T © R Conclusions: a) S ! R b) T ! S