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NTSE SAT Physics - Sources of Energy Practice Questions

NTSE SAT Physics - Sources of Energy

Exam Duration: 45 Mins Total Questions : 30

1 )

Liquified petroleum gas mainly contains

(a)
Methane
(b)
Butane
(c)
Propane
(d)
Ethene

2 )

What is the normal power rating of a compact fluorescent lamp (CFL)?

(a)
25 Watt
(b)
15 Watt
(c)
40 Watt
(d)
50 Watt

3 )

A country has a potential to produce 600 \(\times\) 10⁸MW of hydroelectric power and is utilizing 20% of this capacity. 30% of the total electricity generation in this country is from hydroelectric power plants. The total electrical power produced by it is

(a)
4 \(\times\) 10⁸MW
(b)
120 \(\times\) 10⁶MW
(c)
4 \(\times\) 10⁶MW
(d)
120 \(\times\) 10⁸MW

4 )

The calorific values of three fuels x,y and z are 17 KJ/g, 48 KJ/g and 150 KJ/g respectively. At room temperature x is a solid, y is a liquid and z is a gas. On combustion z explodes forming stream whereas x and y produces CO₂and leave no residue. The most ideal fuel out of these three is

(a)
fuel x
(b)
fuel z
(c)
fuel y
(d)
y & z

5 )

To work properly, wind electric generators need wind speeds of atleast about

(a)
1.5 km/hr
(b)
15 km/hr
(c)
150 km/hr
(d)
1500 krn/hr

6 )

With the addition of impurities, the resistance of a semi-conductor

(a)
increases
(b)
decreases
(c)
first decreases then increases
(d)
first increases then decreases

7 )

The energy available due to difference in the temperature of water at the surface of ocean and at deeper levels is called

(a)
Tidal energy
(b)
Wind energy
(c)
Solar energy
(d)
None of these

8 )

Who conducted the first controlled fission reaction?

(a)
Fermi
(b)
Cavendish
(c)
Otto Hahu
(d)
Hans Bethe

9 )

Which of the following type of radiations is used in heating of a Solar cooker

(a)
Visible light
(b)
Infra-red rays
(c)
UV rays
(d)
None of these

10 )

Most of the fuels are

(a)
carbon compounds with sulphur
(b)
nitrogen compounds with carbon
(c)
carbon compounds with hydrogen
(d)
none of these

11 )

The nuclear fuel in Sun is

(a)
Uranium
(b)
Hydrogen
(c)
Helium
(d)
Thorium

12 )

Which of the following fuel is different from others?

(a)
Diesel
(b)
Lignite
(c)
Gasoline
(d)
Alcohol

13 )

The main constituent of LPG is ______

(a)
Methane
(b)
Butane
(c)
Hydrogen
(d)
Propane

14 )

The radiations emitted by the sun and responsible for the cause of skin cancer are ____

(a)
Infra-red
(b)
X-rays
(c)
Micro-waves
(d)
Ultra-violet

15 )

The efficiency of the solar cooker can be increased by placing a___

(a)
Plane mirror
(b)
Convex mirror
(c)
Convex lens
(d)
Concave lens

16 )

The molten material mixed with gases in the mantle of the earth is called ______

(a)
Core
(b)
Lava
(c)
Geyser
(d)
Magma

17 )

The fuel used in the nuclear reactor is _______

(a)
Cadmium
(b)
Radium
(c)
Uranium
(d)
Thorium

18 )

Ocean thermal energy is due to

(a)
Energy stored by waves in the ocean
(b)
Temperature difference at different levels in the ocean
(c)
Pressure difference at different levels in the ocean
(d)
Tides arising out in the ocean

19 )

The major problem in harnessing nuclear energy is how to

(a)
Split nuclei
(b)
Sustain the reaction.
(c)
Dispose- off spent fuel safely.
(d)
Convert nuclear energy into electrical energy.

20 )

The renewable source of energy is.

(a)
Coal
(b)
Petroleum
(c)
Natural gas
(d)
Wind

21 )

When we use biomass to generate electricity the conversion of energy is from

(a)
Chemical to electrical energy
(b)
Kinetic to electrical energy
(c)
nuclear energy to electrical
(d)
muscular energy to electrical energy

22 )

The part of sunlight used in heating solar cooker is

(a)
Ultraviolet rays
(b)
Infrared radiations
(c)
Visible radiations
(d)
All of these

23 )

A wind mill can function with a minimum wind velocity of abo

(a)
10 km/hr
(b)
7km/hr
(c)
15 km/hr
(d)
20km/hr

24 )

The energy processed by water stored in the dam i

(a)
heat energy
(b)
kinetic energy
(c)
chemical energy
(d)
potential energy

25 )

Simplest hydrocarbon is

(a)
methane
(b)
hydrogen
(c)
ammonia
(d)
oxygen

26 )

Cooking gas is

(a)
CNG
(b)
LPG
(c)
Natural
(d)
Petroleum gas

27 )

The maximum temperature attained by a box type solar cooker is

(a)
20°C
(b)
50°C
(c)
150°C
(d)
100°C

28 )

Methane forms an explosive mixture with

(a)
Methane
(b)
Air
(c)
Butane
(d)
None of these

29 )

In nuclear fusion process

(a)
A big nucleus splits
(b)
Smaller nuclei fuse to form larger nuclei
(c)
The nucleus may split or fuse
(d)
None of these

30 )

Energy consumption is increasing due to

(a)
Setting up new industries
(b)
Growth of cities
(c)
Modern machinery
(d)
All of these

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NTSE SAT Physics - Sources of Energy Practice Questions

NTSE SAT Physics - Sources of Energy

Exam Duration: 45 Mins Total Questions : 30

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