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Q:

How many members should be present to hold the meeting of the Lok Sabha?

A) One-fourth of the total membership	B) One-tenth of the total membership of the house
C) 50% strength of the Lok Sabha	D) At least 100 members

Answer & Explanation Answer: B) One-tenth of the total membership of the house

Explanation:

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Filed Under: Indian Politics

Q:

A man lost half of its initial amount in the gambling after playing 3 rounds. The rule of gambling is that if he wins he will receive Rs. 100, but he has to give 50% of the total amount after each round.Luckily he won all the three rounds. The initial amount with which he had started the gambling was :

A) 500/3	B) 700/3
C) 300	D) 600

Answer & Explanation Answer: B) 700/3

Explanation:

Let the initial amount be x (with gambler), then

$[[(x + 100) \frac{1}{2} + 100] \frac{1}{2} + 100] \frac{1}{2} = \frac{x}{2}$

=> x = 700/3

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

A number X is mistakenly divided by 10 instead of being multiplied by 10. What is the percentage error in the result?

A) -99%	B) +99%
C) -100%	D) +100%

Answer & Explanation Answer: A) -99%

Explanation:

By mistake = x/10

Actual value = x * 10

% Change = $\frac{10 x - \frac{x}{10}}{10 x} \times 100 = \frac{99}{100} \times 100$ = 99% (negative)

Since actual value is greater than the wrong value.

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Filed Under: Percentage
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Q:

In an examination a candidate got 30% marks and failed by 30 marks. If the passing marks are 60% of the total marks, then the maximum marks will be:

A) 450	B) 600
C) 300	D) 100

Answer & Explanation Answer: D) 100

Explanation:

Passing marks are 0.6x

so 0.3x + 30 = 0.6x => x = 100

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Filed Under: Percentage
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Q:

If lift is going up with acceleration, the apparent weight of a body is

A) may be more or less than true weight	B) more than the true weight
C) less than the true weight	D) equal to the true weight

Answer & Explanation Answer: B) more than the true weight

Explanation:

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Filed Under: Physics

Q:

The speed of light will be minimum while passing through

A) water	B) vaccum
C) air	D) glass

Answer & Explanation Answer: D) glass

Explanation:

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Filed Under: Physics

Q:

The working of the quartz crystal in the watch is based on the

A) Piezo - electric Effect	B) Edison Effect
C) Photoelectric Effect	D) Johnson Effect

Answer & Explanation Answer: A) Piezo - electric Effect

Explanation:

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Filed Under: Physics

Q:

The working principle of a washing machine is

A) reverse osmosis	B) diffusion
C) centrifugation	D) dialysis

Answer & Explanation Answer: C) centrifugation

Explanation:

The working principle of a washing machine is centrifugation.

The_working_principle_of_a_washing_machine_is1542349278.jpg image

Centrifugation is a separation process which uses the action of centrifugal force to promote accelerated settling of particles in a solid-liquid mixture.

The washing machine consists of centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.

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Filed Under: Physics
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