Questions

Q:

When light enters from air to water, then its 

A) frequency increases and speed decreases B) frequency is same but the wavelength is smaller in water than in air
C) frequency is same but the wavelength is larger in water than in air D) frequency and speed both decreases
 
Answer & Explanation Answer: B) frequency is same but the wavelength is smaller in water than in air

Explanation:
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Filed Under: Physics

13 9500
Q:

TEL minimise the knocking effect when mixed with petrol, it acts as_______

A) Positive catalyst B) Negative catalyst
C) Auto catalyst D) Induced catalyst
 
Answer & Explanation Answer: B) Negative catalyst

Explanation:
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Filed Under: Chemistry

18 9499
Q:

A group of eight bits is called

A) buzz B) nibble
C) byte D) word
 
Answer & Explanation Answer: C) byte

Explanation:

A group of eight bits is called as a byte and that of 4 bits is called as a nibble.

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Filed Under: Computer
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17 9497
Q:

Who of the following was awarded ' Bharat Ratna ' posthumously

A) Dr.S.Radhakrishnan B) Mother Teresa
C) Jayaprakash Narayan D) Khan abdul Ghaffar Khan
 
Answer & Explanation Answer: C) Jayaprakash Narayan

Explanation:
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Filed Under: Honours and Awards

9 9482
Q:

A woman’s voice is shriller than a man’s voice due to

A) weak vocal chords B) lower frequency
C) higher frequency D) higher amplitude
 
Answer & Explanation Answer: C) higher frequency

Explanation:

As the frequency of sound is higher, women have shriller voices than men.

The shrillness or pitch of a sound is determined by its frequency. The higher the pitch shriller the voice. As the sounds produced by vocal cords of women are higher than men so women have shriller voices than men. Because their vocal cord is of smaller size. As their vocal cord is more stretched than men's.

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Filed Under: Physics
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7 9479
Q:

The age of a lion can be determined from its

A) hair B) nose
C) nails D) tail
 
Answer & Explanation Answer: B) nose

Explanation:

By seeing the color of the nose we can determine the age of lions.

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Filed Under: Animals and Birds
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24 9477
Q:

The particle with 13 protons and 10 electrons is

A) Al -atom B) Al3+ ion
C) nitrogen isotope D) None of these
 
Answer & Explanation Answer: B) Al3+ ion

Explanation:
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Filed Under: Chemistry

23 9477
Q:

A spreadsheet contains

A) Rows B) Columns
C) Both A & B D) Tables
 
Answer & Explanation Answer: C) Both A & B

Explanation:

A_spreadsheet_contains1553603758.png image

 

A spreadsheet contains both rows and columns.

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Filed Under: Computer
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5 9475