General Science - Mock Test 28

Question 271

Alzheimer's disease in human beings is characterised by the degeneration of?

A) Liver cells B) Kidney cells C) Brain cells D) Nerve cells

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Question 272

Amount of water vapour (gaseous) in a given volume of air (Cubic Meter) is known as ?

A) Mixing Ratio B) Specific Humidity C) Relative Humidity D) Absolute Humidity

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Question 273

An element that does not occur in nature but can be produced artificially is?

A) Thorium B) Plutonium C) Radium D) Uranium

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Question 274

For which of the following substances, the resistance decreases with increase in temperature?

A) Pure Silicon B) Platinum C) Nichrome D) Copper

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Question 275

Formaldehyde is the starting material for the manufacture of?

A) Nylon B) Bakelite C) D D T D) Rayon

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Question 276

Galena is the principal ore of which element?

A) Lead B) Mercury C) Iron D) Copper

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Question 277

German Silver is an alloy of?

A) Silver, Zinc & Nickel B) Copper, Silver & Nickel C) Silver, Copper & Aluminium D) Zinc, Copper & Nickel

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Question 278

Glass is actually a?

A) a crystalline solid B) an elastic solid C) an ionic solid D) a vitrifies liquid

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Question 279

Gene was first isolated by?

A) C V Raman B) S Chandrashekar C) Hargobind Khurana D) J C Bose

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Question 280

From which mineral is radium obtained?

A) Rutile B) Pitchblende C) Limestone D) Haematitie

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