Questions

Q:

What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?

A) 18 km/sec B) 11.2 km/sec
C) 21 km/sec D) 35 km/sec
 
Answer & Explanation Answer: B) 11.2 km/sec

Explanation:

This 11.2 km/s is also known as the escape velocity. It works out to roughly 25000miles per hour 

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Filed Under: Physics

3 2502
Q:

Green pigment is called

A) Chlorophyll B) Xanthophyll
C) Carotene D) Phycobillin
 
Answer & Explanation Answer: A) Chlorophyll

Explanation:
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Filed Under: Biology

4 2502
Q:

The carbon tetrachloride molecule (CCl4) is

A) a nonpolar molecule with polar bonds B) a nonpolar molecule with nonpolar bonds
C) a polar molecule with polar bonds D) a polar molecule with nonploar bonds
 
Answer & Explanation Answer: A) a nonpolar molecule with polar bonds

Explanation:

The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.

 

When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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4 2501
Q:

Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water 

A) increases to a great extent B) increases slightly
C) decreases slightly D) decreases rapidly
 
Answer & Explanation Answer: C) decreases slightly

Explanation:

Evaporation causing cooling.Here the evaporation is less. Therefore cooling is less.

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Filed Under: Physics

3 2501
Q:

The recent trial run of 'odd-even' traffic scheme for Delhi was based on

 

 

A) odd-even calendar months B) odd-even calendar dates
C) vehicle registration numbers D) odd-even hours during 8 am to 8 pm
 
Answer & Explanation Answer: C) vehicle registration numbers

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams

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Q:

Count function in SQL returns the number of

A) groups B) values or rows
C) columns D) distinct values
 
Answer & Explanation Answer: B) values or rows

Explanation:

Count function in SQL returns the number of values or rows.

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Q:

What does the Olympic Flame symbolize?

A) Challenge B) Zeal to play sports
C) Integrity D) Continuity
 
Answer & Explanation Answer: D) Continuity

Explanation:
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Filed Under: Sports
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Q:

What can you serve but never eat?

Answer

A Badminton shuttle or a tennis ball.

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