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Q:

A train-A passes a stationary train B and a pole in 24 sec and 9 sec respectively. If the speed of train A is 48 kmph, what is the length of train B?

A) 200 mts	B) 180 mts
C) 160 mts	D) 145 mts

Answer & Explanation Answer: A) 200 mts

Explanation:

Length of train A = 48 x 9 x 5/18 = 120 mts

Length of train B = 48 x 24 x 5/18 - 120

=> 320 - 120 = 200 mts.

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Filed Under: Time and Distance
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Q:

Avinash gave a sum of 5400 at the simple rate of interest of 8% to Rajeev for 4 years and Rajeev gave this amount to Chanukya at the rate of 6% for 4 years. Find how much extra amount has to be paid by Rajeev to Avinash after 4 years?

A) Rs. 364	B) Rs. 432
C) Rs. 498	D) Rs. 554

Answer & Explanation Answer: B) Rs. 432

Explanation:

Here Avinash gave to Rajeev and Rajeev gave the same to Chanukya

Principal amount and Time is same but the only difference is Rate of interest.

Rajeev took @ 8% and gave it to Chanukya @ 6%

Here the difference in interest rate = 2%

2% of 5400 should be the extra amount paid by Rajeev to Avinash

Required amount = $\frac{2 x 5400 x 4}{100} = 432$

Hence, Rs. 432 is the extra amount has to be paid by Rajeev to Avinash after 4 years.

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Filed Under: Simple Interest
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Q:

P, Q, and R can do a job in 12 days together. If their efficiency of working be in the ratio 3 : 8 : 5, Find in what time Q can complete the same work alone?

A) 36 days	B) 30 days
C) 24 days	D) 22 days

Answer & Explanation Answer: A) 36 days

Explanation:

Given the ratio of efficiencies of P, Q & R are 3 : 8 : 5

Let the efficiencies of P, Q & R be 3x, 8x and 5x respectively

They can do work for 12 days.

=> Total work = 12 x 16x = 192x

Now, the required time taken by Q to complete the job alone = $\frac{162 x}{8 x} = 24$ days.

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Filed Under: Time and Work
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Q:

Which of the following has the highest frequency?

A) Cosmic rays	B) X-rays
C) Radio waves	D) Microwaves

Answer & Explanation Answer: A) Cosmic rays

Explanation:

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Filed Under: Physics
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Q:

What word in the English language is always spelled incorrectly?

A) Schezwan	B) Yorker
C) Incorrectly	D) Psycologically

Answer & Explanation Answer: C) Incorrectly

Explanation:

INCORRECTLY is the only English word which is always spelled incorrectly.

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Filed Under: Word Puzzles
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Q:

What is the shortest phase of the cell cycle?

A) M	B) G1
C) S	D) G2

Answer & Explanation Answer: A) M

Explanation:

Longest and shortest phases Of cell cycle:

Shortest Phase - M phase or Mitotic phase.

Longest phase - G1 phase of the Interphase

Longest and shortest phases During Mitosis:

Longest Phase - Prophase

Shortest Phase - Anaphase

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Filed Under: Biology
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Q:

Molar mass of HNO3?

A) 63 g/mol	B) 53 g/mol
C) 48 g/mol	D) 52 g/mol

Answer & Explanation Answer: A) 63 g/mol

Explanation:

Calculation of molar mass of HNO3:

Atomic masses of H, N, O are 1, 14, 16 respectively

Now the molar mass of HNO3 is

HNO3 = 1X1 + 1X14 + 3X16

= 1 + 14 + 48

= 63 g/mol or amu.

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Filed Under: Chemistry
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Q:

What is more useful when it is broken?

Answer

An Egg is more useful when it is broken than it is not.

Workspace

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Subject: Word Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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