Q:

The HIV virus weakens the immunity of a person because it destroys

A) mast cells	B) platelets
C) erythrocytes	D) lymphocytes

Answer & Explanation Answer: D) lymphocytes

Explanation:

The HIV virus continuously invades and destroys T-cells (lymphocytes). Eventually the body can't replace the T-cells fast enough, and the immune system deteriorates. When the immune system has deteriorated to the point that it is unable to fight off diseases, a person is diagnosed with AIDS.

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Filed Under: General Science
Exam Prep: Bank Exams

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Q:

What is the name of the device used to convert alternating current into direct current ?

A) Ammeter	B) Galvanometer
C) Rectifier	D) Transformer

Answer & Explanation Answer: C) Rectifier

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

A permanent magnet can affect

A) Magnets	B) Electromagnets
C) Both A & B	D) None of the above

Answer & Explanation Answer: C) Both A & B

Explanation:

A permanent magnet can affect both magnets and electromagnets.

a_permanent_magnet_can_affect1559196137.jpg image

A permanent magnet has natural magnetic properties while a temporal magnet is created by artificial means. Permanent magnets do not lose their magnetic ability.

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 1523

Q:

In a _________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation

A) longitudinal	B) rolling
C) transverse	D) field

Answer & Explanation Answer: C) transverse

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams , GATE
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2 1523

Q:

What is impulse equal to?

A) Change in momentum	B) Change in force
C) Change in velocity	D) Change in acceleration

Answer & Explanation Answer: A) Change in momentum

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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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.

A child born after the death of father

A) Post dated	B) Premature
C) Paternal	D) Posthumous

Answer & Explanation Answer: D) Posthumous

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Which of the following mammals lay eggs?

A) Bat	B) Whale
C) Weasel	D) Platypus

Answer & Explanation Answer: D) Platypus

Explanation:

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Filed Under: Animals and Birds
Exam Prep: Bank Exams

10 1523

Q:

If x + (1/x) = 2, then what is the value of $x^{64} + x^{121}$ ?

A) 0	B) 1
C) 2	D) -2

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