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Q:

Which disease is caused due to deficiency of Iodine?

A) Rickets B) Scurvy
C) Goitre D) Growth retardation
 
Answer & Explanation Answer: C) Goitre

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Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero. B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1. D) Hydrogen can have more than one oxidation number.
 
Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

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Q:

Chemical properties of isotopes .............

A) must be same B) must be different
C) need not be same D) need not be different
 
Answer & Explanation Answer: A) must be same

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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:

What is the other name of sodium carbonate?

A) Baking soda B) Washing soda
C) Baking powder D) No option is correct
 
Answer & Explanation Answer: B) Washing soda

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Q:

"Forests" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

A) Union B) State
C) Global D) Concurrent
 
Answer & Explanation Answer: D) Concurrent

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Q:

The body of all complex animals consist of only _______ basic types of tissue(s).

A) 4000 B) 400
C) 40 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

Which is NOT an example of organism that takes in whole food material and breaks it down inside its body?

 

A) Mushrooms   B) Fish  
C) Snake D) Lizards
 
Answer & Explanation Answer: A) Mushrooms  

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