General Science - Biology MCQs

41. Why Vitamin A is considered good for human health?

  1. It improves night vision as well as the day vision
  2. It is responsible for pigments which are used by rods and cones in Retina of Eye

Select the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

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42. Which of the following is / are correct statements with respect to Stem Cells?

  1. Stem cells can develop into organs needed for transplant
  2. Stem cells are found only in reproductive tissues
  3. Stem cells are relatively unspecialized cells

Select the correct option from the codes given below:  

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 3
[D] Only 1

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43. The radiations used in Radiotherapy for the treatment of Cancer destroys the Cancer tumour mainly by which among the following?

[A] Destroying the Cytoplasm of the Cancerous Cells
[B] Destroying the Cell membranes of the Cancerous Cells
[C] Destroying the DNA of the Cancerous Cells
[D] Destroying the spindle fibres which are used in Cell Division

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44. With reference to human blood, consider the following statements:

  1. The Red Blood Cells live for around 120 days
  2. Both Red and White blood cells are formed in the bone marrow
  3. The platelets are not cells

Which among the above statements is / are correct?

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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45. In human body, the main target of antidiuretic hormone is ?

[A] Heart
[B] Kidney
[C] Liver
[D] Spleen

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46. Which of the following statements are correct about Ebola?

  1. The Ebola virus can only be passed through body fluid
  2. Fruit bats or flying foxes are natural hosts of the Ebola virus
  3. There are five strains of Ebola virus out of which four can make people sick
  4. The Ebola virus is named after a river

Select the correct statements from the codes given below:

[A] Only 1, 2 & 4
[B] Only 1, 2 & 3
[C] Only 2, 3 & 4
[D] 1, 2, 3 & 4

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47. Which of the following by-products of mineral fuels combustion can cause cancer?

  1. Oxides of nitrogen
  2. Carbon monoxide
  3. Polycyclic hydrocarbons
  4. Lead

Select the correct option from the codes given below:

[A] Only 1, 2 & 3
[B] Only 2, 3 & 4
[C] Only 3 & 4
[D] Only 4

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48. Consider the following statements: 
1. Foundation seeds are offspring of the breeder seeds
2. Certified Seeds are offsprings of nucleus seeds 
Which of the above is / are correct statements? 

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

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49. How the white cement is different from Ordinary Portland Cement (OPC)?

  1. While OPC contains iron and manganese content, there is no iron or manganese in White cement
  2. While Gypsum is used in making of OPC, Gypsum is not used in making of White Cement
  3. Production of white cement consumes significantly more energy in comparison to gray cement

Select the correct option from the codes given below:

[A] Only 1
[B] Only 1 & 3
[C] Only 2 & 3
[D] Only 3

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50. In comparison to sour crude oil, the sweet crude oil: 

  1. has less sulphur content
  2. sourced only from North Sea
  3. is expensive

Which of the above is / are correct statements?

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

Show Answer

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