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IASbaba’s Daily Prelims Test [Day 11]

  • IASbaba
  • June 28, 2015
  • 28
IASbaba's Daily Prelims Test, Prelims 2015, Science and Technology, UPSC
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 IASbaba’s Daily Prelims Test [Day 11]

IMPORTANT NOTE-  Hope you all are preparing well. Get ready for new challenge based on Current Affairs, IYB and Economic Survey.  You will be posted about it tonight. Keep practicing and revise well.  There is a surprise for all of you 🙂 Best wishes 

Topic- Science and Technology

1. Which of the following should be your first choice for the treatment of ‘Hyperacidity’?

  1. Antacids
  2. Antihistamines
  3. Histamines
  4. Analgesics

 

2. If you visit a water treatment plant in your area, you will witness the processes followed in water purification. Select the correct order in which water purification works-

  1. Flocculation
  2. Coagulation
  3. Sedimentation
  4. Disinfection

Correct order-

  1. 1-2-3-4
  2. 2-1-3-4
  3. 2-3-4-1
  4. 1-3-4-2

 

3. Our food contains number of additives like sweeteners, antioxidants, flavours, fat emulsifiers and preservatives. Which of the following also add nutritive value to our food?

  1. Antioxidants
  2. Preservatives
  3. Sweeteners
  4. Fat emulsifiers

Select the correct code-

  1. 1, 3, and 4
  2. 1, 2, 3 and 4
  3. 2, 3, and 4
  4. None

 

4. Artificial sweeteners like Aspartame or Saccharines are 100 times sweeter than Sugar despite it is recommended for a Diabetic person, why?

  1. Artificial sweeteners have less effect on insulin secretion
  2. Artificial sweeteners do not add to calorie intake
  3. Artificial sweeteners easily digested and excreted while sugar is energy rich and affect digestive system

Select the correct code

  1. Only 1
  2. 2 and 3
  3. Only 2
  4. All

 

5. Consider the following statements regarding Vitamins

  1. If you are eating eggs regularly, the concentration of Vitamin B-2 and Vitamin D is increasing.
  2. Intake of excess green leafy vegetables will enhance the concentration of Vitamin C, K and B-1

Select the correct code

  1. Only 1
  2. Only 2
  3. Both
  4. None

 

6. Which feature of some species of blue-green algae helps to promote then as bio-fertilizers?

  1. They induce the roots of the crop plants to absorb the soil nitrates in larger quantities
  2. They have the mechanism to convert atmospheric nitrogen into a form that crop plants can absorb readily.
  3. They convert atmospheric methane into ammonia which the crop plants can absorb readily
  4. They induce the crop plants to produce enzymes which help convert atmospheric nitrogen to nitrates.

 

7. Excessive release of the pollutant carbon monoxide (CO) into the sir may produce a condition in which oxygen supply in the human body decreases. Why?

  1. The inhaled CO has much higher affinity for haemoglobin as compared to oxygen
  2. The inhaled CO may be converted into CO2 that causes poisoning
  3. The inhaled CO destroys the chemical structure of haemoglobin
  4. The inhaled CO primarily affects the neurological and respiratory system in the brain.

 

8. Ice is less dense than water is a well know fact. What if it would have been denser than water?

  1. Lakes and oceans would freeze from the bottom up, almost certainly preventing the kind of chemistry that makes life possible.
  2. Increasing pressure would raise the freezing point of water. The deep oceans would be permanently frozen.
  3. A very large part of the planets Oxygen is produced by plankton in the ocean and this could be severely disrupted.

Select the correct code-

  1. 1 and 2
  2. 2 and 3
  3. 1, 2 and 3
  4. Only 2

 

9. What are the components of Photochemical Smog?

  1. Nitric oxide, Ozone and PAN (peroxyacetyl nitrate)
  2. Nitric oxide, Ozone, aldehyde and PAN (peroxyacetyl nitrate)
  3. Nitric oxide, Ozone, aldehyde, acrolein and PAN (peroxyacetyl nitrate)
  4. Nitric oxide, Ozone, formaldehyde, acrolein and PAN (peroxyacetyl nitrate)

 

10. Which among the following can be used as bleaching agents?

  1. Mix of liquefied carbon dioxide and a detergent
  2. Chloroethene
  3. Hydrogen peroxide
  4. Sodium hypochlorite

Select the correct code-

  1. 1, 2, 3 and 4
  2. 2, 3 and 4
  3. 1, 3 and 4
  4. 3 and 4

 

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