The process by which a substance absorbs moisture upon exposure to atmosphere is called?

Related Mcqs:

1. When an atom absorbs energy the lines in the spectrum will appear which are_________________?

   A. Brighter
   B. Darker
   C. Colourless
   D. Hard to locate

2. The highest temperature at which a substance can exist as a liquid is called its______________?

   A. Critical temperature
   B. Standard temperature
   C. Absolute temperature
   D. Upper consulate temperature

3. The Substance which resist in change in PH is called?

   A. Neutralization
   B. Osmosis
   C. Buffer
   D. Active transport

   Submitted by: Chakar Hussain Shar

4. Which of the following is a substance?

   A. Sea water
   B. Brass
   C. Tape water
   D. Graphite
   E. Sand

   Submitted by: Mansoor Ul Haque

5. As a substance moves from a solid to a liquid all of the following changes occur except ?

   A. molecules become more disordered.
   B. K.E of the molecules decreases
   C. intermolecular forces become weaker.
   D. molecules move more frequently.

6. Paramagnetic behaviour of substance is measured by a balance called___________________?

   A. Analytical balance
   B. Guoys balance
   C. Electrical balance
   D. Single beam balance

7. A substance having very high vapour pressure at its melting point on heating will show_______________?

   A. Melting
   B. Sublimation
   C. Decomposition
   D. Condensation

8. A substance which increases the reactivity of enzyme is called_________________?

   A. Promoters
   B. Inhibitors
   C. Stimulators
   D. Non-activators

9. A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

   A. C2H4
   B. C3H6
   C. C4H8
   D. C5H10

   Submitted by: Muhammad Ali Kunbhar

10. The properties which do not depend on mass of the substance are _____________?

    A. Extensive properties
    B. Colligative properties
    C. intensive properties
    D. None of These

    Submitted by: Aneela shabbir