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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Q:

Select the synonym of

astonish

A) mundane	B) empress
C) overwhelm	D) calm

Answer & Explanation Answer: C) overwhelm

Explanation:

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Q:

The maximum number of electrons that can be accommodated in a shell depends on the formula

A) 1n2	B) n2
C) 3n2	D) 2n2

Answer & Explanation Answer: D) 2n2

Explanation:

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Q:

Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$

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

Answer & Explanation Answer: B) Option 2

Explanation:

Due to absence of low lying vacant d orbital in B, $s p^{3} d^{2}$ hybridization is not possible hence $B F_{6}^{3 -}$ will not formed.

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Q:

Who is the author of the book 'Freedom Behind Bars '

A) Kiran Bedi	B) Jawaharlal Nehru
C) Nelson Mandela	D) Sheikh Abdullah

Answer & Explanation Answer: A) Kiran Bedi

Explanation:

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Q:

The winner of the open competition for designing the Rupee sign '₹' was

A) Uday Kumar	B) Vijay Kumar
C) Prem Kumar	D) Pranav Kumar

Answer & Explanation Answer: A) Uday Kumar

Explanation:

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Q:

One rabbit saw 6 elephants while going towards River. Every elephant saw 2 monkeys are going towards river. Every monkey holds one tortoice in their hands.

How many animals are going towards the river?

A) 14	B) 11
C) 8	D) 5

Answer & Explanation Answer: D) 5

Explanation:

From the given data,

1 rabbit is going towards river not the six eephants. And these 6 elephants saw 2 monkeys are going towards river. Each monkey is holding 1 tortoice.

One_rabbit_saw_6_elephants_while_going_towards_River._Every_elephant_saw_2_monkeys_are_going_towards_river_._Every_monkey_holds_one_tortoice_in_their_hands_._1536581196.jpg image

Hence, number of animals going towards river are 1 rabbit, 2 monkeys and 2 tortoice

= 1 + 2 + 2

= 5.

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Q:

'One who possesses many talents'

One word substitute for the given word is?

A) Exceptional	B) Wisdom
C) Versatile	D) Nubile

Answer & Explanation Answer: C) Versatile

Explanation:

A person, One who possesses many talents is called a Versatile.

It means multiskilled, adaptable, flexible, ...

versatile1533106888.png image

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