Noble gases are so called zero group because they have:_________?

Related Mcqs:

1. Noble gases are named so because they are__________________?

   A. less reactive
   B. Zero group elements
   C. Having completely filled valence shell
   D. All

2. Which of the following noble gases is abundant in air?

   A. Neon
   B. Helium
   C. Argon
   D. Methane

   Submitted by: Malik Asghar Hussain

3. Which of the following noble gases is not present in atmosphere?

   A. Argon
   B. Helium
   C. Radon
   D. Xenon

   Submitted by: Malik Asghar Hussain

4. The diffusion of gases at absolute zero will be________________?

   A. Unchanged
   B. Slightly decreased
   C. Slightly increased
   D. Zero

5. The boiling point increases down the zero group element due to_________________?

   A. Ion dipole forces
   B. London forces
   C. Hydrogen bonding
   D. Dipole dipole forces

6. Melting points of VII-A group elements down the group ____________________?

   A. Increase
   B. Decrease
   C. Remain constant
   D. No regular trend

7. Which is the unit of (K) rate constant for zero order reaction ?

   A. s-1
   B. mol dm-3 s-1
   C. mol-1 dm3 s-1
   D. mol-2 dm6 s-1

8. The octane number of zero is assigned to____________?

   A. 2-methyl octane
   B. n-heptane
   C. iso-octane
   D. 3-methyl octane

   Submitted by: Muhammad Ali Kunbhar

9. Which of the following is known as absolute zero?

   A. 0C°
   B. 273K
   C. 273.16C°
   D. -273.16C°

   Submitted by: Zahid Jagirani

10. Which of the following gases when passed through warm dilute solution of H2SO4 in presence of HgSO4 gives acetaldehyde

    A. CH₄
    B. C₂H₆
    C. C₂H₄
    D. C₂H₂

    Submitted by: Aamir khan Hullio