Home
School Exams
Scholarship Exams
OTI365 - NTSE - X Standard
NTSE SAT Chemistry - Matter in Our Surroundings Practice Questions

NTSE SAT Chemistry - Matter in Our Surroundings

Exam Duration: 45 Mins Total Questions : 30

1 )

Identify the substance which has highest boiling point

(a)
Rain water
(b)
Sea water
(c)
Distilled water
(d)
Ethanol

2 )

Which of the following is true about the two statements
Statement I: Use of pressure cooker reduces the cooking time.
Statement II: Pressure is low·inside the cooker, hence cooking temperature is higher

(a)
I and II are correct and II is the correct explanation of I
(b)
I and II are correct but II is not the correct explanation of I
(c)
I is correct but II is wrong
(d)
I is wrong but II is correct

3 )

Maximum intermolecular force is present in

(a)
Glycerol
(b)
Honey
(c)
Oxygen
(d)
Solid CO₂

4 )

Which of the following statements are not correct about the liquids?
i. They have fixed volume but no fixed shape.
ii. They are rigid
iii. Thermal expansion is very high
iv. They are fluids

(a)
i,iv
(b)
i.ii
(c)
ii, iii
(d)
i, ii and iii

5 )

Which of the following statement is not true?

(a)
Boiling is a bulk process and is very slow
(b)
Evaporation is a rapid process and is a surface phenomena
(c)
At 1 atmospheric pressure boiling point of all the liquids are same
(d)
All of the above

6 )

Matter has ___________

(a)
no mass but occupies space
(b)
mass but occupies no space
(c)
mass and occupies space
(d)
no mass and occupies no space

7 )

The gaseous form of water is called as ______________

(a)
water gas
(b)
water vapour
(c)
fog
(d)
snow

8 )

Mixing of gases is called___________

(a)
diffusion
(b)
effusion
(c)
filtration
(d)
sedimentation

9 )

A solid has___________

(a)
maximum intermolecular space
(b)
definite mass but no definite volume
(c)
very high compressibility
(d)
maximum intermolecular force of attraction

10 )

The freezing point of pure water is_________

(a)
100°C
(b)
0°C
(c)
5°C
(d)
78.3°C

11 )

Which one of the following sets of phenomena would increase on raising the temperature?

(a)
Diffusion, evaporation, compression of gases
(b)
Evaporation, compression of gases, solubility
(c)
Evaporation, diffusion, expansion of gas
(d)
Evaporation, solubility, diffusion, compre-ssion of gasses

12 )

Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions' of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions:

(a)
Low temperature, low pressure
(b)
High temperature, low pressure
(c)
Low temperature, high pressure
(d)
High temperature, high pressure

13 )

During summer, water kept in an earthen pot becomes cool because of the phenomenon of:

(a)
diffusion
(b)
transpiration
(c)
osmosis
(d)
evaporation

14 )

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container

(a)
(i) and (iii)
(b)
(i) and (iv)
(c)
(ii) and (iii)
(d)
(ii) and (iv)

15 )

Liquids have:

(a)
fixed volume and fixed shape
(b)
fixed shape and no fixed volume
(c)
fixed volume and no fixed shape
(d)
neither fixed volume nor fixed shape

16 )

Materials existing as liquids have

(a)
boiling point and melting point above room temperature
(b)
boiling point and melting point below room temperature
(c)
boiling point above room temperature and melting point below room temperature
(d)
boiling point and melting point below room temperature

17 )

One small crystal of potassium permanganate may contain particles