Which of the following is the lightest substance?

Related Mcqs:

1. lightest metal is__________?

   A. Lithium B. Sodium C. Magnesium D. Aluminium Submitted by: Junaid Amjad...

2. Of the six noble gases in the periodic table, which is the lightest?

   A. Nitrogen B. Hydrogen C. Helium D. Oxygen Submitted by: Ashfaque Ali Khoso...

3. Which of the following is a substance?

   A. Sea water B. Brass C. Tape water D. Graphite E. Sand Submitted by: Mansoor Ul Haque...

4. Which of the following is the hardest substance?

   A. Copper B. Diamond C. Iron D. Silicon Submitted by: ABDUL HAYEE...

5. The most densest substance on the Earth is __________.

   A. Platinum B. Copper C. Steel D. Osmium...

6. A substance which increases the efficiency of a catalyst is termed as:

   A. Promoter B. Activator C. Retarder D. Super catalyst Submitted by: Mansoor Ul Haque...

7. The property of a substance to absorb moisture from the air on exposure is called____________?

   A. osmosis B. deliquescence C. efflorescence D. desiccation Submitted by: WIQAR AHMAD...

8. Which is the hardest substance in the human body?

   A. Tooth enamel B. Skull C. Knee cap D. Rib Submitted by: ABDUL HAYEE...

9. Substance used in match sticks ?

   A. Sulphur B. Zinc C. Acid D. Phosphorus Submitted by: Mansoor Ahmed Suhag...

10. Substance whose atoms can be split are known as __________ materials.

    A. Fusionable B. Fissionable C. Combustible D. None of these Submitted by: Rashid Mehmood...