Hydrogen Test

Result

Hydrogen Test - 36

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

What happens inside water molecules if heat is added when water boils?

A
The energy is stored in the form of potential energy; therefore, the temperature doesn't increase

B
The energy is added as kinetic energy; therefore, the molecules move faster

C
The energy is stored as potential energy; therefore, the molecules move faster

D
The energy is added as kinetic energy; therefore, the temperature increases

E
All options are correct

Solution

Water boils at 100$$ ^{\circ}C $$. If we add more heat to boiling water, then it is used to convert to vapour and its potential energy increases. But the temperature doesn,t increase above 100$$ ^{\circ}C $$.
Question 2
1 / -0

The kind of water is suitable for use is :

A
hard water

B
soft water

C
both A and B

D
none of above

Solution

Soft water is suitable for use.
Hard water is not always harmful for drinking purpose but it is disadvantageous to the laundry work.
Question 3
1 / -0

Which of the gases listed below would not be collected via water displacement?

A
$$CO_2$$

B
$$CH_4$$

C
$$O_2$$

D
$$NH_3$$

E
$$H_2$$

Solution

Ammonia $$\displaystyle NH_3$$ gas would not be collected via water displacement as it is water-soluble.

Hence the correct option is D.
Question 4
1 / -0

Which of the following will react violently with water to form a base?

A
Chlorine

B
Cobalt

C
Calcium

D
Aluminum

E
Potassium

Solution

Potassium will react violently with water to form a base.
$$\displaystyle 2K + 2H_2O \rightarrow 2KOH + H_2$$
Question 5
1 / -0

Heavy water can be used as :

A
Neutron moderator

B
Production of deuterium

C
Tracer compound

D
All of above
Question 6
1 / -0

The specific heat capacity of water is:

A
$$1$$ calorie $${g}^{-1}$$

B
$$10$$ calories $${g}^{-1}$$

C
$$2$$ calories $${g}^{-1}$$

D
$$30$$ calorie $${g}^{-1}$$

Solution

The specific heat capacity of water is $$1$$ calorie $$g^{-1}.$$
Question 7
1 / -0

When water is cooled it contracts until it reaches ________ and then it starts expanding.

A
$$37^oC$$

B
$$40^oC$$

C
$$0^oC$$

D
$$4^oC$$

Solution

At $$4^oC$$ the density of water is maximum and volume of water is minimum.
Question 8
1 / -0

By this process, water can be purified in a simple way:

A
Freezing

B
Melting

C
Boiling

D
Evaporating

Solution

By boiling, water can be purified in a simple way as the nonvolatile impurities remain back and pure water is condensed separately.
Question 9
1 / -0

Water is a __________ oxide.

A
Acidic

B
Neutral

C
Basic

D
Amphoteric

Solution

Pure water is a neutral oxide solution, its pH value is 7 at 25 degree celsius.
Question 10
1 / -0

Impurities in water:

A
Lower the freezing point

B
Increase the boiling point

C
Increase the density

D
All the above

Solution

Impurities in water (A) lower the freezing point (termed as depression in freezing point $$\displaystyle \Delta T_f$$), (B) increase the boiling point (termed as elevation in boiling point $$\displaystyle \Delta T_f$$) and (C) increase the density.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Hydrogen Test - 36

Result

Hydrogen Test - 36

Score

-

Rank

-

SHARING IS CARING

Question 1

The energy is stored in the form of potential energy; therefore, the temperature doesn't increase

The energy is added as kinetic energy; therefore, the molecules move faster

The energy is stored as potential energy; therefore, the molecules move faster

The energy is added as kinetic energy; therefore, the temperature increases

All options are correct

Solution

Question 2

hard water

soft water

both A and B

none of above

Solution

Question 3

$$CO_2$$

$$CH_4$$

$$O_2$$

$$NH_3$$

$$H_2$$

Solution

Question 4

Chlorine

Cobalt

Calcium

Aluminum

Potassium

Solution

Question 5

Neutron moderator

Production of deuterium

Tracer compound

All of above

Question 6

$$1$$ calorie $${g}^{-1}$$

$$10$$ calories $${g}^{-1}$$

$$2$$ calories $${g}^{-1}$$

$$30$$ calorie $${g}^{-1}$$

Solution

Question 7

$$37^oC$$

$$40^oC$$

$$0^oC$$

$$4^oC$$

Solution

Question 8

Freezing

Melting

Boiling

Evaporating

Solution

Question 9

Acidic

Neutral

Basic

Amphoteric

Solution

Question 10

Lower the freezing point

Increase the boiling point

Increase the density

All the above

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.