Exams Questions and Answers

Q:

There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate

A) Rs.4972	B) Rs.3972
C) Rs.5972	D) Rs.2972

Answer & Explanation Answer: B) Rs.3972

Explanation:

Let P = Rs. 100. Then, S.I. Rs. 60 and T = 6 years.

R= $\frac{100 * 60}{100 * 6}$ =10% p.a

Now, P = Rs. 12000. T = 3 years and R = 10% p.a.

C.I= $R s . [12000 * {[1 + \frac{10}{100}]}^{3} - 1]$
=Rs.3972

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

52 44240

Q:

A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is ?

A) 45 kmph	B) 25 kmph
C) 30 kmph	D) 50 kmph

Answer & Explanation Answer: D) 50 kmph

Explanation:

Speed of the train relative to man = (125/10) m/sec = (25/2) m/sec.
[(25/2) x (18/5)] km/hr = 45 km/hr.
Let the speed of the train be 'S' km/hr.
Then, relative speed = (S - 5) km/hr.
S - 5 = 45 => S = 50 km/hr.

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Filed Under: Problems on Trains
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

49 44240

Q:

What is the general formula of alkenes?

A) CnH2n	B) CnH2n+2
C) CnH2n-2	D) CnH2n-1

Answer & Explanation Answer: A) CnH2n

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

2 44237

Q:

A man is facing north-west. He turns $90^{o}$ in the clockwise direction, then $180^{o}$ in the anticlockwise direction and then another $90^{o}$ in the same direction. Which direction is he facing now?

A) South	B) South-west
C) South-east	D) East

Answer & Explanation Answer: C) South-east

Explanation:

As shown in fig. the man initially faces in the direction OP. On moving $90^{0}$ clockwise, he faces in the direction OX. On further moving $180^{0}$ anticlockwise, he faces in the direction OY. Finally, on moving $90^{0}$ anticlockwise, he faces in the direction OZ, which is South-east. new1497431743.jpg image

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Filed Under: Direction Sense Test
Exam Prep: CAT , Bank Exams
Job Role: Bank PO , Bank Clerk

243 44221

Q:

What is the value of $\sqrt{1054 + \sqrt{196} + \sqrt{169} + \sqrt{64}}$ ?

A) 33	B) 37
C) 29	D) 31

Answer & Explanation Answer: A) 33

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 44213

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 44197

Q:

If $tanα = \sqrt{2} + 1$ , then the value of $tanα - cotα$ is

A) √2 - 1	B) 2√2
C) 2	D) 1

Answer & Explanation Answer: C) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

2 44196

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

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