Q:

The monomer of polythene is

A) ethylene	B) ethyl alcohol
C) vinyl chloride	D) ethanol

Answer & Explanation Answer: A) ethylene

Explanation:

The monomer of polythene is ethylene.

the_monomer_of_polythene_is1546857163.png image

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Q:

Permanent hardness of water is due to the presence of ?

A) Calcium sulphate	B) Calcium bicarbonate
C) Sodium bicarbonate	D) Magnesium bicarbonate

Answer & Explanation Answer: A) Calcium sulphate

Explanation:

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Q:

The European Union has adopted which of the following as common currency?

A) Dollar	B) Dinar
C) Yen	D) Euro

Answer & Explanation Answer: D) Euro

Explanation:

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Q:

How Many Prime ministers have conferred with Bharat Ratna upto November 2014 ?

Answer

Six

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Q:

Shedding of leaves and fruits is due to the presence of hormone named

A) Indole - acetic acid	B) Naphthalene acetic acid
C) Gibberellins	D) Abscisic acid

Answer & Explanation Answer: D) Abscisic acid

Explanation:

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Q:

A place where government records are kept

A) Coffer	B) Pantry
C) Archives	D) Scullery

Answer & Explanation Answer: C) Archives

Explanation:

A place where government records are kept are called Archives.

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Q:

Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K?

A) K1k2/k1+k2	B) 2k1k2/k1+k2
C) K1+k2/k1k2	D) None

Answer & Explanation Answer: B) 2k1k2/k1+k2

Explanation:

We know that,

The equivalent K = $\frac{L 1 + L 2}{\frac{L 1}{K 1} + \frac{L 2}{K 2}}$

where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively.

But here L1 = L2 = L (say)

Then K = L+L/(L/K1 + L/K2) = $\frac{2 K 1 K 2}{K 1 + K 2}$

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Q:

The Land locked natural harbour along along the east coast of India is

A) Vishakapatnam	B) Chennai
C) Kolkata	D) Paradeep

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