Z number for chlorine is __________?

Related Mcqs:

1. Which of the following terms is used for the mass of chlorine 35.5 ?

   A. relative atomic mass
   B. mass number
   C. atomic weight
   D. relative isotopic mass

2. A single chlorine free radical can destroy how many ozone molecules ?

   A. 10
   B. 100
   C. 10000
   D. 100000

3. Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ?

   A. Cl2O
   B. ClO2
   C. Cl2O6
   D. Cl2O7

4. Which is the paramagnetic oxide of chlorine ?

   A. Cl2O7
   B. Cl2O6
   C. ClO2
   D. all

5. The colour of chlorine gas is_______________?

   A. pale yellow
   B. freenish yellow
   C. reddish brown
   D. grayish black

6. Chlorine Cl when attached to benzene has________?

   A. +I and +R effect
   B. -1 and +R effect
   C. +1 and -R effect
   D. -I and -R effect

   Submitted by: Muhammad Ali Kunbhar

7. The PH of milk is __________?

   A. 6.0
   B. 6.5
   C. 7.0
   D.7.5

   Submitted by: Muhammad Ali Kunbhar

8. When an aldehyde is reacted with hydrogen cyanide a ” Cyanihydrin” is formed. This process is best termed as __________?

   A. Electrophilic addition
   B. Electrophilic substitution
   C. Nucleophilic addition
   D. Necleophilic substitution

   Submitted by: Muhammad Ali Kunbhar

9. Alpha (α) particles are helium (He) nucleus with a charge of __________ ?

   A. e
   B. 2e
   C. 3e
   D. 4e

   Submitted by: Rashid Mehmood

10. In SI base units, 1 Bq is equal to __________ ?

    A. 10 disintegration per second
    B. 1.5 disintegration per second
    C. 0.01 disintegration per second
    D. 1 disintegration per second

    Submitted by: Rashid Mehmood