science gk1

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Question 1:The S.I unit of power is ?

A.joule

B.watt

C. ohm

D.ampere

Explanation:The S.Iunit of power is watt .

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Question 2:what is one horse power ?

A.746 watt

B.786 watt

C.726 watt

D.736 watt

Explanation:One horse power is equal to 746 watt.

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Question 3:fuse wire is?

A)high melting ponit,high resistance

B)low melting ponit,low resistance

C) high melting ponit,low resistance

D)low melting ponit,high resistance

Explanation:fuse wire is low melting ponit and has high resistance.

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Question 4:The S.I unit of resistance is?

A. ohm

B.joule

C.ampere

D. watt

Explanation:The S.I unit of resistance is ohm.

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Question 5:Artificial radioactivity was discoverd by________ ?

A. Neils Bohr

B.Irene curie

C. Ronentgen

D.Becquerel

Explanation:Artificial radioactivity was discoverd by Irene curie .

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Question 6:Earthquake produces __________ ?

A.Ultrasound

B.Infrasound

C.audiabe sound

D.none

Explanation:Earthquake produces Infrasound .

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Question 7:How long sound persists in our ears?

A.1/10 of second

B.1/9s

C.1/8s

D.1/7s

Explanation:Sound persists in our ears in 1/10 of second .

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Question 8:Dogs can receive sound upto___________?

A.15 kHz

B. 35 kHz

C. 20 kHz

D.25 kHz

Explanation:Dogs can receive sound upto 25 kHz.

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Question 9:The first nuclear reactor was built at__________ ?

A.Chicago

B.Newyark

C.Sanfransisco

D.london

Explanation:The first nuclear reactor was built at Chicago .

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Question 10:If the exposure is about 100 R.It may causes ?

A.hair loss

B.death

C.leukemia

D.skin disorder

Explanation:If the exposure is about 100 R.It may causes leukemia.

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Question 11: What is used in the treatment of cancer?

A.Radio cobalt

B.Radio sodium

C.Radio iron

D.Radio calsium

Explanation:Radio cobaltis used in the treatment of cancer.

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Question 12:The loudness of normal human voice is_______ ?

A.40dB

B.20dB

C.50dB

D.60dB

Explanation:The loudness of normal human voice is 60dB.

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Question 13:The diameter of eyeball is___?

A. 2.3 cm

B.1.3 cm

C.3.3 cm

D.2.5 cm

Explanation:The diameter of eyeball is 2.3 cm .

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Question 14:For air, the refractive index is_______?

A.1

B.2

C. 0

D.3

Explanation:For air, the refractive index is 1.

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Question 15:The ball thrown up,the value of g will be__________ ?

A.negligible

B.+ve

C. -ve

D.zero

Explanation:The ball thrown up,the value of g will be -ve .

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Report Card

Total Questions Attempted: 0

Correct Answers: 0

Wrong Answers: 0

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