At what temperature does silver melt?

A: 327 °C

B: 275 °C

C: 961.8 °C

D: 100 °C

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961.8 °C

Which of the following has not involuntary muscles?

A: Blood Vessels

B: Bigestive System

C: Heart

D: Brains

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Brains

Which of the following is a Non Metal that remains Liquid at room temperature?

A: Bromine

B: Phosphorous

C: Chlorine

D: Helium

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Bromine

Which one of the following is a non-metallic mineral?

A: Magnesium

B: Manganese

C: Gypsum

D: Bauxite

E: None of these

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Gypsum

One Joule is equal to_____?

A: 103 ergs

B: 105 ergs

C: 107 ergs

D: 1011 ergs

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107 ergs

The best conductor of heat among liquid is______?

A: Mercury

B: Water

C: Ether

D: Alcohol

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Mercury

Magnifying power of a simple microscope can be increased by ?

A: Decreasing focal length of the lens

B: increasing focal length of the lens

C: Lens of large aperture

D: lens of short aperture

E: None of these

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Decreasing focal length of the lens

The Big Dipper is part of which constellation?

A: Ursa Minor

B: Ursa Major

C: The Great Bear

D: A. and C. above

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and above

What type of a mirror is used in anti-shop-lifting-devices?

A: Concave mirror

B: Convex mirror

C: Plane mirror

D: Both (b) and (c)

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Convex mirror

The rear view mirror of a motor vehicle is ___?

A: Plane

B: Concave

C: Convex

D: Biconcave

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Convex

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