11. Silicon is used in

1. 1. solar energy devices

   
   
   

   2. semiconductors

   
   
   

   3. transistors

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   All of these

   Correct Option: D

   All of these

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12. Which one is a sublime substance?

1. 1. Table salt

   
   
   

   2. Sugar

   
   
   

   3. Iodine

   
   
   

   4. Potassium Iodide

   
   
   

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1. View Hint View Answer Discuss in Forum

   Iodine is a sublimate.

   Correct Option: C

   Iodine is a sublimate.

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13. Food cans are coated with tin and not with zinc because

1. 1. zinc is costlier than tin

   
   
   

   2. zinc has a higher melting point than tin

   
   
   

   3. zinc is more reactive than tin

   
   
   

   4. zinc is less reactive than tin

   
   
   

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1. View Hint View Answer Discuss in Forum

   zinc is more reactive than tin

   Correct Option: C

   zinc is more reactive than tin

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14. Which of the following is an antidiabatic drug?

1. 1. Insulin

   
   
   

   2. Penicillin

   
   
   

   3. Chloroquine

   
   
   

   4. Aspirin

   
   
   

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1. View Hint View Answer Discuss in Forum

   Insulin is an antidiabatic drug.

   Correct Option: A

   Insulin is an antidiabatic drug.

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15. The new strain of bacteria produced by biotechnology in alcohol industry is

1. 1. Escherichia coli

   
   
   

   2. Saccharomyces cerevisiae

   
   
   

   3. Bacillus subtilis

   
   
   

   4. Pseudomonas putida

   
   
   

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1. View Hint View Answer Discuss in Forum

   Pseudomonas putida

   Correct Option: D

   Pseudomonas putida

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