Magnification produced by a rear view mirror fitted in vehicles:

• is less than the object
• is more than the object
• is equal to the object
• can be more or less than the object depending upon the position of object in front of it.
Solution
Correct Option: A  [ is less than the object ]

Explanation:

In medical terminology, USG stands for:

• Undersized gland
• Ultrasonography
• Unsegmented gonads
• None of the above
Solution
Correct Option: B  [ Ultrasonography ]

Explanation:

All ships have sonar system. It is used to detect /measure :

• Distance of the shore
• Sound on the surface
• Sound of animals in Sea
• Depth of ocean
Solution
Correct Option: D  [ Depth of ocean ]

Explanation:

A transformer is used to :

• Increase or decrease D.C voltage
• Increase or decrease A.C voltage
• Convert A.C to D.C
• Convert D.C into A.C
Solution
Correct Option: B  [ Increase or decrease A.C voltage ]

Explanation:

Which of the following statements is not correct ?

• Silver Revolution refers to increased pulse production.
• White Revolution refers to increased milk production.
• Green Revolution refers to increased production of food grains.
• Yellow Revolution refers to increased oil-seed production.
Solution
Correct Option: A  [ Silver Revolution refers to increased pulse production. ]

Explanation:

Which of the following can cause depletion of Ozone layer ?

• Hydrogen Sulphide
• Smoke
• Aerosols
• Hydrogen gas
Solution
Correct Option: C  [ Aerosols ]

Explanation:

With respect to India's nuclear programme, consider the following statements:

(i) ADITYA is the name of India's indigenously developed tokamak.

(ii) ADITYA is a breeder reactor.

(iii) ADITYA is a fusion reactor.

(iv) ADITYA is a fission reactor.

Select the correct statement(s) using the codes given below.

• Only (i)
• Only (i) and (ii)
• Only (i) and (iii)
• Only (i) and (iv)
Solution
Correct Option: C  [ Only (i) and (iii) ]

Explanation:

What is Air Quality Index ?

• It tells about sound pollution.
• It measures air pollution mainly sulphur content in the air.
• It measures ozone levels in the selected area.
• It checks the colour of the air.
Solution
Correct Option: C  [ It measures ozone levels in the selected area. ]

Explanation:

Metals can be beaten into sheets, because:

• they are ductile
• they are soft
• they are malleable
• the metal particles are loosely arranged
Solution
Correct Option: C  [ they are malleable ]

Explanation:

The art and science of map making is called:

• remote sensing
• cartography
• photogrammetry
• mapping
Solution
Correct Option: B  [ cartography ]

Explanation: