Q:

Metals are good conductors of electricity because

A) The atoms are lightly packed	B) They contain free electrons
C) They have high melting point	D) All the above

Answer & Explanation Answer: B) They contain free electrons

Explanation:

Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity.

Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.

For example, copper is used for electrical wiring because it is a good conductor of electricity.

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Q:

What is the maximum velocity with which a body of mass 'm' must enter a vertical loop of radius 'R'so that it can complete the loop?

A) 0 B) gR C) $\sqrt{2} g R$ D) $\sqrt{5 g R}$

A) A	B) B
C) C	D) D

Answer & Explanation Answer: D) D

Explanation:

To complete the vertical loop, the minimum speed required at the lowest point = $\sqrt{5 g R}$ .

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Q:

The brand name of 16 digit Unique identification number to be assigned to each individual in the country will be

A) Pehchan	B) Maadhyam
C) Aadhar	D) Aabhar

Answer & Explanation Answer: C) Aadhar

Explanation:

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Filed Under: Indian Politics

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Q:

In the structure of Planet Earth, below the mantle, the core is mainly made up of which one of the following ?

A) Aluminium	B) Chromium
C) Iron	D) Silicon

Answer & Explanation Answer: C) Iron

Explanation:

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Q:

What position did Babe Ruth play

A) Only 1st base	B) Both pitcher and out fielder
C) Only out fielder	D) Only pitcher

Answer & Explanation Answer: B) Both pitcher and out fielder

Explanation:

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Q:

Who among the following leaders, did not believe in the drain theory of Dadabhai Naoroji?

A) Harillal M. Kania	B) S. Varadachari
C) M Patanjali Sastri	D) Sir Maurice Gwyer

Answer & Explanation Answer: A) Harillal M. Kania

Explanation:

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Q:

From the following languages listed in the Eighth schedule of the constitution pick out of the one which is official language of a state

A) Kashmiri	B) Urdu
C) Sindhi	D) Nepali

Answer & Explanation Answer: B) Urdu

Explanation:

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Filed Under: Indian Politics

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Q:

The two types of output devices are

A) Monitor and Printer	B) Floppy disc and CD
C) Keyboard and Mouse	D) None of these

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