Questions

Q:

The brain and spinal cord are two components of the

A) Central nervous system B) Peripheral nervous system
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Central nervous system

Explanation:

The brain and spinal cord are two components of the Central nervous system which are responsible for sensory information.

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Q:

Which statement correctly describes the role of chance in evolution?

A) An allele that increases evolutionary fitness cannot be lost from a population by chance events. B) The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA
C) Evolutionary change proceeds by an accumulation of changes that occur by chance. D) None of the above
 
Answer & Explanation Answer: B) The ultimate source of new alleles is mutation, random changes in the nucleotide sequences of an organism's DNA

Explanation:
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Q:

Which statement about subatomic particles is not true?

A) Protons and neutrons have the same charge B) Protons and electrons have the opposite charhes
C) Protons and neutrons have almost the same mass D) All of the above
 
Answer & Explanation Answer: A) Protons and neutrons have the same charge

Explanation:
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Q:

Which country won the Cricket World cup in 2011

A) Sri Lanka B) Australia
C) Pakistan D) India
 
Answer & Explanation Answer: D) India

Explanation:
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Q:

Select the correct statement about the ureters.

A) The ureter is innervated by parasympathetic nerve endings only. B) Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.
C) The epithelium is stratified squamous like the skin, which allows a great deal of stretch. D) The ureters are capable of peristalsis like that of the gastrointestinal tract.
 
Answer & Explanation Answer: D) The ureters are capable of peristalsis like that of the gastrointestinal tract.

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Q:

Self pollination will lead to

A) Inbreeding B) Over breeding
C) Outbreeding D) Rare breeding
 
Answer & Explanation Answer: A) Inbreeding

Explanation:

Self pollination occurs in the flowers when the pollen grains of the flower falls on the stigma of the same due to wind or insects like moths and bees. This lead to the inbreeding.

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Q:

Which substance contains metallic bonds?

A) C6H12O6 B) Hg
C) H2O D) NaCl
 
Answer & Explanation Answer: B) Hg

Explanation:

Metallic bond is a bond between two metal atoms. Here in the given option Hg is the only metal with metallic bond.

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Q:

When is International Day of Non-Violence,recognized by the UN,observed on M.K.Gandhi's birthday is observed

A) December 11 B) November 29
C) October 2 D) Second wednesday of october
 
Answer & Explanation Answer: C) October 2

Explanation:
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