Q:

Isotopes are atoms of the same element that have different

A) numbers of neutrons	B) numbers of electrons
C) numbers of protons	D) atomic numbers

Answer & Explanation Answer: A) numbers of neutrons

Explanation:

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

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Q:

Magnesium (Mg) + Oxygen (O2) = ?

A) Mg2O	B) MgO4
C) O2Mg	D) MgO

Answer & Explanation Answer: D) MgO

Explanation:

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Q:

Which one of the following statements is not correct?

A) The cathode rays originate from cathode and proceed towards the anode in a cathode-ray discharge tube.	B) The television picture tubes are nothing but cathode ray tubes.
C) The cathode rays themselves are not visible.	D) The characteristics of cathode rays depend upon the nature of the gas present in the cathode-ray tube.

Answer & Explanation Answer: D) The characteristics of cathode rays depend upon the nature of the gas present in the cathode-ray tube.

Explanation:

Cathode ray is a beam of electrons emitted from the cathode of a vacuum tube. It is invisible. Cathode ray tubes are also found in televisions and computer monitors. Since cathode ray is a beam of electrons and all electrons are identical, charge to mass ratio is same for all the gases and does not depend on the nature of gas.

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Q:

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.
Thing that can be felt or touched

A) Pandemic	B) Palpable
C) Paltry	D) Panchromatic

Answer & Explanation Answer: B) Palpable

Explanation:

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Q:

What is the average Life span of RBC?

A) 120 days	B) 99 days
C) 101 days	D) 111 days

Answer & Explanation Answer: A) 120 days

Explanation:

The average Life span of RBC is 120 days.

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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

The director will give you instructions.

A) Instructions shall be given to you by the director.	B) You will get instructions from the director.
C) You shall get instructions from the director.	D) Instructions will be given to you by the director.

Answer & Explanation Answer: D) Instructions will be given to you by the director.

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Once and for all

A) Now and for the last time; finally	B) To be successful in the first attempt
C) To do a charitable act for the benefit of everybody	D) To speak for the majority

Answer & Explanation Answer: A) Now and for the last time; finally

Explanation:

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Q:

Which of the following is not a National Park?

A) Corbett National Park	B) Kaziranga National Park
C) Satara National Park	D) Bandipur National Park

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