Q:

The Hydraulic Break works on the principle of _____ ?

A) Pascal's Law	B) Boyle's law
C) Coulomb's law	D) Bernouli's law

Answer & Explanation Answer: A) Pascal's Law

Explanation:

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11 2995

Q:

Which shows a correctly paired DNA molecule?

A) AT	B) TC
C) AC	D) TG

Answer & Explanation Answer: A) AT

Explanation:

The nucleotides that are present in DNA molecule are 4. They are Thymine (T), Guanine (G), Adenine (A) and Cytosine (C).

Here in this Adenine pairs with Thymine (A - T) and Cytosine pairs with Guanine (C - G).

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2 2995

Q:

What is seismic zone extending at an angle of about $45^{o}$ from the base of an ocean trench, down through lithosphere to the asthenosphere known as?

A) Appleton layer	B) Benioff zone
C) Conard discontinuity	D) Convergence zone

Answer & Explanation Answer: B) Benioff zone

Explanation:

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1 2993

Q:

Which of the following is system software?

A) MS Paint	B) MS Excel
C) MS Word	D) MS Windows

Answer & Explanation Answer: D) MS Windows

Explanation:

We know that, the collection of programs which performs specific tasks in a computer is called as software. Software in a computer is of two types. They are :

1. Aplication Software

2. System Software

System software is a computer program that performs the basic functionaility of a computer i.e, running a systems hardware and applications like loading programs, saving data, displaying, etc...

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1 2992

Q:

A body given with an initial velocity moved under the effect of gravity is called?

Answer

Projectile

Workspace

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Subject: Physics

6 2991

Q:

Electron, Proton, Neutron discovered by

A) J. J. Thomson, Ernest Rutherford & James Chadwick	B) John Dalton, J.J. Thomson & Neils Bohr
C) Neils Bohr, John Dalton & J.J. Thomson	D) None of the above

Answer & Explanation Answer: A) J. J. Thomson, Ernest Rutherford & James Chadwick

Explanation:

J. J. Thomson discovered electrons in the year 1897.

electron_discovered_by1560577555.jpg image

Ernest Rutherford discovered protons in 1911.

proton_discovered_by1560577702.jpg image

James Chadwick discovered neutrons.

neutron_discovered_by1560577801.jpg image

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5 2990

Q:

Carbon monoxide is a common atmospheric pollutant.

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

Carbon monoxide is a common atmospheric pollutant in the world which is produced in combustion process in automobiles and industries. It has no smell and cannot be seen.

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1 2990

Q:

The five permanent members of UN security council are

A) Japan, West Germany, USSR, UK and USA	B) Germany, China, USSR, UK and USA
C) Canada, China, France, USSR and USA	D) China, France, USSR, UK and USA

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