Q:

Optical fiber works on the principle of -

A) Diffusion	B) Total Internal Reflection
C) Scattering	D) Refraction

Answer & Explanation Answer: B) Total Internal Reflection

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Q:

A galvanometer can be converted into a voltmeter by connecting with it a

A) high resistance in parallel	B) low resistance on parallel
C) high resistance on series	D) low resistance in series

Answer & Explanation Answer: C) high resistance on series

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Q:

With reference to gravity, what is G called?

A) Gravitational constant	B) Gravitational attraction
C) Gravitational force	D) Acceleration due to gravity

Answer & Explanation Answer: A) Gravitational constant

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Q:

Workers in leather tanning industries tend to suffer from

A) asthma	B) heart diseases
C) skin diseases	D) blood diseases

Answer & Explanation Answer: C) skin diseases

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Q:

Potato is a ?

A) Root	B) Stem
C) Bud	D) Fruit

Answer & Explanation Answer: B) Stem

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Q:

Asexual reproduction takes place in

A) Plants	B) Higher animals
C) Lower animals	D) Lower animals and plants

Answer & Explanation Answer: D) Lower animals and plants

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Q:

Which of the following represents the most complex trophic level?

A) Community	B) Population
C) Ecosystem	D) Species

Answer & Explanation Answer: C) Ecosystem

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Q:

In which year was the First Five Year Plan launched in India?

A) 1921	B) 1931
C) 1941	D) 1951

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