The ratio of pure gold in 18 carat gold is _______________?

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1. 1 Carat is equal to __________?

   A. 0.2 g B. 0.3 g C. 0.4 g D. 0.5 g Submitted by: Mohammad Raza Budh...

2. Human beings use _______ liters of pure oxygen per day.

   A. 550 B. 2500 C. 1,050 D. 10,000 Submitted by: Muhammad Awais Tariq...

3. Which metal is pure conductor of electricity?

   A. Copper B. Gold C. Silver D. lead Submitted by: Wajahat Ali...

4. Boiling point of pure water is __________?

   A. 90’C B.  97’C C. 100’C D. None of these Submitted by: Rafi Umar...

5. The most pure form of carbon among these are?

   A. Anthracite B. Lampblack C. Graphite D. None of these Submitted by: H@yii...

6. Pure limestone is called _______?

   A. Aluminum Oxide B. Calcium Carbonate C. Calcium Sulphate D. None of these Submitted by: Farhan Rana...

7. Copper can be converted into gold by ?

   A. Artificial radioactivity B. heating C. Electroplating D. Chemical reaction...

8. Basic metals can be converted into gold by ?

   A. Heating B. Beating C. Artificial nuclear radioactivity D. Chemical reaction...

9. Black gold is an oil; Black diamond is_________?

   A. Copper B. Iron C. Coal D. Wood Submitted by: Mansoor Ahmed Suhag...

10. Which part of the human body contains the most gold?

    A. Liver B. Skin C. Toenails D. Kidney Submitted by: Mirza Musawer Jamil...