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Q:

' Mohs scale ' is used to indicate the

A) degree of brittleness of a substance B) degree of hardness of mineral
C) degree of viscosity of a liquid D) degree of elasticity of a material
 
Answer & Explanation Answer: B) degree of hardness of mineral

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Filed Under: World Geography

Q:

If 2 tables and 3 chairs cost Rs, 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost ?

A) 500 B) 1000
C) 1500 D) 2000
 
Answer & Explanation Answer: B) 1000

Explanation:

Let the cost of a table and that of a chair be Rs. x and Rs, y respectively.

Then, 2x + 3y = 3500 ...(i)

and 3x + 2y = 4000 .....(ii)

solving (i) and (ii) we get x = 1000, y = 500 

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Filed Under: Simplification

Q:

The upper part of the mantle upon which the crust of the earth floats is called

A) Barysphere B) Mesosphere
C) Mohorovic discontinuity D) Asthenosphere
 
Answer & Explanation Answer: D) Asthenosphere

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Filed Under: World Geography

Q:

The mapping of which of the following is most difficult

A) Mountains B) Plateau and Plains
C) Interior of the earth D) Oceans and their depth
 
Answer & Explanation Answer: C) Interior of the earth

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Filed Under: World Geography

Q:

Which of the following layers of the earth is believed to have the heavist mineral materials of highest density

A) Central core B) Crust
C) Mantle D) Both (B) and (C)
 
Answer & Explanation Answer: A) Central core

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Filed Under: World Geography

Q:

Eclipses occur due to which optical phenomena

A) Reflection B) Refraction
C) Rectilinear propagation D) Diffraction
 
Answer & Explanation Answer: C) Rectilinear propagation

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Filed Under: World Geography

Q:

How does the Sun get its energy

A) From gravitational pressure B) From nuclear fission
C) From nuclear fusion D) None of the above
 
Answer & Explanation Answer: C) From nuclear fusion

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Filed Under: World Geography

Q:

The Tropic of Cancer does not pass through

A) India B) Egypt
C) Mexico D) Iran
 
Answer & Explanation Answer: D) Iran

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Filed Under: World Geography