Questions

Q:

What is the duration of the world’s shortest X–ray laser has been successfully created by the scientists?

 

A) 39 nanoseconds B) 43 attoseconds
C) 15 picoseconds D) 57 microseconds
 
Answer & Explanation Answer: B) 43 attoseconds

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Q:

The credit for classifying the elements on the basis of their atomic masses goes to

A) John Dalton B) John Alexander Reina Newlands
C) Dmitri Mendeleev D) Johann Wolfgang Dobereiner
 
Answer & Explanation Answer: C) Dmitri Mendeleev

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Q:

West Bengal approved the construction of states 1st Deep Sea Port at

A) Udaipur B) Digha
C) Bakkhali D) Tajpur
 
Answer & Explanation Answer: D) Tajpur

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Q:

The change in the optimal quantity of a good when its price changes and the consumer’s income is adjusted so that she can just buy the bundle that she was buying before the price change is called?

A) Law of demand B) Substitution effect
C) Problem of choice D) Optimal choice
 
Answer & Explanation Answer: B) Substitution effect

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Q:

What is the pH value of human blood?

A) 8.3 B) 6.8
C) 7.4 D) 6
 
Answer & Explanation Answer: C) 7.4

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Q:

In which of the following the dominant phase is Gametophyte?

A) Bryophyta B) Pteridophyta
C) Gymnosperms D) Angiosperms
 
Answer & Explanation Answer: A) Bryophyta

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Q:

Which plant tissue is also known as growing tissue?

A) Only permanent tissue B) Only Meristematic tissue
C) Both Permanent and meristematic tissue D) Neither Permanent nor meristematic tissue  
 
Answer & Explanation Answer: B) Only Meristematic tissue

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Q:

Which component of the blood transports food, CO2 and nitrogenous waste?

A) WBCs B) Blood platelets
C) RBCs D) Plasma
 
Answer & Explanation Answer: D) Plasma

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