CSS Everyday Science 20101
- 1.Water is heated in a kettle. Te inside water is heated by convection. A person sitting near the fire receives heat by :
- A.
Conduction
- B.
Convection
- C.
Radiation
- D.
Reflection
- E.
None of these
- 2.A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ?
- A.
No
- B.
Yes
- C.
In due course time
- D.
Very soon
- E.
None of these
- 3.The measurement of rainfall is made by an instrument known as
- A.
Hydrometer
- B.
Barometer
- C.
Hygrometer
- D.
Pedometer
- E.
None of these
- 4.Light year is a unit of
- A.
Distance
- B.
Time Period
- C.
Light intensity
- D.
Time
- E.
None of these
- 5.Three elements needed for the healthy growth of plants are :
- A.
N,P,K
- B.
N,C,P
- C.
N,K,C
- D.
N,S,P
- E.
None of these
- 6.Copper can be converted into gold by
- A.
Heating
- B.
Artificial Radioactivity
- C.
Electroplating
- D.
Chemical reaction
- E.
None of these
- 7.In winter an iron pipe feel colder than a wooden window . This is because wood is :
- A.
Conductor
- B.
Non-Conductor
- C.
Semi- Conductor
- D.
Not a solid while iron is a solid
- E.
None of these
- 8.The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least :
- A.
1120 ft
- B.
120 ft
- C.
56 ft
- D.
100 ft
- E.
None of these
- 9.T is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the
- A.
Pitch
- B.
Frequency
- C.
Time period
- D.
Quality
- E.
None of these
- 10.When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is :
- A.
Visible
- B.
Transparent
- C.
Invisible
- D.
Opaque
- E.
None of these
- 11.A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be :
- A.
6 feet
- B.
12 feet
- C.
4 feet
- D.
3 feet
- E.
None of these
- 12.The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use
- A.
Red waves
- B.
Infrared waves
- C.
Ultrasonic
- D.
Super sonic
- E.
None of these
- 13.In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called :
- A.
Chemical Reaction
- B.
Nuclear reaction
- C.
Fission nuclear reaction
- D.
Fusion nuclear reaction
- E.
None of these
- 14.Parsec is a unit of :
- A.
Energy
- B.
Time
- C.
Power
- D.
Distance
- E.
None of these
- 15.German Silver is an alloy of:
- A.
Zn + Ni
- B.
Cu + Zn
- C.
Cu + Ni
- D.
Cu + Sn
- E.
None of these
- 16.The Continent Antarctica lies at the:
- A.
North pole
- B.
South pole
- C.
Middle of the earth
- D.
Equator
- E.
None of these
- 17.The temperature of the dead body is:
- A.
0 'C
- B.
37 '
- C.
Room temperature
- D.
Temperature of the place where it is kept
- E.
None of these
- 18.Lactometer is a type of Hydrometer which is used to measure the specific gravity of :
- A.
Honey
- B.
Water
- C.
Milk
- D.
Olive oil
- E.
None of these
- 19.Cusec is a unit of :
- A.
Area
- B.
Time
- C.
Distance
- D.
Mass
- E.
None of these
- 20.The deepest place on earth is
- A.
Trench
- B.
Mariana Trench
- C.
Mangrove
- D.
Groove
- E.
None of these
- 21.Winkling of stars is caused by
- A.
Reflection of light
- B.
Polarization of light
- C.
Refraction of light
- D.
Interference of light
- E.
None of these
- 22.Agnifying power of a simple microscope can be increased by
- A.
Increasing focal length of the lens
- B.
Decreasing focal length of the lens
- C.
Lens of large aperture
- D.
Lens of short aperture
- E.
None of these
- 23.Bronze medal is made up of metal :
- A.
Copper , Zinc
- B.
Copper , Nickle
- C.
Copper , Tin
- D.
Copper , Silver
- 24.One of the countries through which equator passes is
- A.
Kenya
- B.
Pakistan
- C.
Malaysia
- D.
Malta
- E.
None of these
- 25.A very important practical application of properties of matter is hoeing or "godi" practiced by the farmers. This property of matter is called :
- A.
Elasticity
- B.
Capillarity
- C.
Stress
- D.
Strain
- E.
None of these
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