Exams Questions and Answers

Q:

Consider the following constituent gases of the atmosphere :

1. Argon

2. Neon

3. Helium

4.Ceirbon dioxide

Which one of the following is the correct ascending sequence of the above gases in terms of the volume percentage?

A) 1-3-2-4	B) 1-4-2-3
C) 4-2-3-1	D) 2-4-1-3

Answer & Explanation Answer: B) 1-4-2-3

Explanation:

Composition of Dry Air (Substance, % by volume)

Nitrogen, N2 78.08

Oxygen, O2

20.95

Argon, Ar 0.93

Carbon dioxide, CO2 0.033

Neon, Ne 0.0018

Helium, He 0.00052

Methane, CH4 0.0002

Krypton, Kr 0.00011

Dinitrogen oxide, N2O 0.00005

Hydrogen, H2 0.00005

Ozone, O3 0.000001

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Filed Under: Chemistry
Exam Prep: Bank Exams

0 48359

Q:

Which group in the modern periodic table contains elements that are inert gases?

A) Group 16	B) Group 18
C) Group 17	D) Group 15

Answer & Explanation Answer: B) Group 18

Explanation:

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

1 48354

Q:

Which of the following terms follows the trend of the given list?

QPQPQRPQP, QPQPRQPQP, QPQRPQPQP, QPRQPQPQP, QRPQPQPQP, _______________.

A) RQPQPQPQP	B) QPQPQPRQP
C) QPQPQRPQP	D) QPQPRQPQP

Answer & Explanation Answer: A) RQPQPQPQP

Explanation:

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

3 48296

Q:

L-Dopa is used to treat

A) Pneumonia	B) Alzheimer's disease
C) Parkinson's disease	D) Breast cancer

Answer & Explanation Answer: C) Parkinson's disease

Explanation:

L-Dopa is used to treat Parkinson's disease.

Parkinson's disease is a long-term, degenerative, neurological disease that causes a person to lose control over some body functions.

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Filed Under: Biology
Exam Prep: Bank Exams

0 48260

Q:

Look at the series :

3, 7, 24, 11, __, 19, 19,... What number should fill the blank ?

A) 15	B) 13
C) 21	D) 16

Answer & Explanation Answer: A) 15

Explanation:

Two series alternate here, with every third number following a different pattern.
In the main series, 4 is added to each number to arrive the next.
In alternate series, 5 is subtracted from each number t arrive the next number.
Here in the main series
3 + 4 = 7
7 + 4 = 11
11 + 4 = 15
15 + 4 = 19

In alternate series
24 - 5 = 19
19 - 5 = 14...

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

23 48256

Q:

${Cos}^{2} 90^{°} + {Cosec}^{2} 90 ° - {Cot}^{2} 45^{°} = ?$

A) 2	B) 1
C) 1/2	D) √3/2

Answer & Explanation Answer: B) 1

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 48223

Q:

Find compound interest on Rs. 7500 at 4% per annum for 2 years, compounded annually.

A) 612	B) 712
C) 812	D) 912

Answer & Explanation Answer: A) 612

Explanation:

Amount = Rs [7500*(1+(4/100)2] = Rs (7500 * (26/25) * (26/25) ) = Rs. 8112.
therefore, C.I. = Rs. (8112 - 7500) = Rs. 612.

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

59 48162

Q:

Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?

A) Addition reaction	B) Substition reaction
C) Combustion reaction	D) Decomposition reaction

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