Q:

Wild goats and snow leopards are found in

A) Peninsular region	B) Gir forests
C) Himalayan region	D) All the above

Answer & Explanation Answer: C) Himalayan region

Explanation:

Wild goats and snow leopards are found in Himalayan region.

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11 6121

Q:

When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

A) the violet ray	B) the red ray
C) the green ray	D) the blue ray

Answer & Explanation Answer: B) the red ray

Explanation:

Red is deviated the least and violet the most

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Filed Under: Physics

14 6113

Q:

Chola Empire was divided into ____

A) Mandalams, Nadu, Avanti & Kurram	B) Mandalams, Nadu, Malkhand & Kurram
C) Avanti, Nadu, Malkhand & Kurram	D) Mandalams, Nadu,Kurram & Valanadu

Answer & Explanation Answer: D) Mandalams, Nadu,Kurram & Valanadu

Explanation:

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26 6109

Q:

Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?

A) Golf tee	B) Motorboat
C) Water skis	D) Hang glider

Answer & Explanation Answer: C) Water skis

Explanation:

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Filed Under: Inventions

7 6106

Q:

Arjuna award is given for

A) Excellence in sports	B) Excellent service during emergency
C) Bravery in the battle field	D) Excellence in archery

Answer & Explanation Answer: A) Excellence in sports

Explanation:

The Arjuna Awards are given by the Ministry of Youth Affairs and Sports, Government of India to recognize outstanding achievement in sports. Started in 1961, the award carries a cash prize of ₹ 500,000, a bronze statue of Arjuna and a scroll.

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5 6105

Q:

Kilohertz is a unit which measures

A) Electromagnetic radio wave frequencies	B) Electric resistance
C) Power used by a current of one ampere	D) Voltage

Answer & Explanation Answer: A) Electromagnetic radio wave frequencies

Explanation:

The hertz (Hz) is defined as one cycle per second and is a SI unit of frequency. Here kilohertz is also a unit of frequency of waves and is defined as 1000 cycles per second. Radio waves are measured in kilohertz (KHz).

Kilohertz_is_a_unit_which_measures1561453991.jpg image

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6 6104

Q:

Fill in the blank with the most appropriate option.

The Universal Constant of Gravitation is ___.

A) 6.67 x 1010 Nm2/kg2	B) 6.67 x 10-10 Nm2/kg2
C) 6.67 x 10-11 Nm2/kg2	D) 9.8 Nm2/kg2

Answer & Explanation Answer: C) 6.67 x 10-11 Nm2/kg2

Explanation:

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0 6103

Q:

A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

A) 2.87 sec	B) 3.44 sec
C) 4.65 sec	D) 5.41 sec

Answer & Explanation Answer: B) 3.44 sec

Explanation:

It is launched vertically with an initial speed of 110 ft/sec.

It will reach maximum height when the speed drops to 0.

Vo=110 feet per second

ho=2 feet

So, h(t) = -16t^2 +110t +2

Take the derivative: h'(t) = 110 -32t

The maximum height will be at the inflection when the derivative crosses the x-axis, then h'(t)=0.

So, set h'(t)=0 and solve for t:

0 = 110 -32t

-110 = -32t

t=3.4375

t=3.44 seconds.

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3 6102

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