Chemistry online GK- Set 06 - ObjectiveBooks
Chemistry online GK- Set 06

Chemistry online GK- Set 06

G.K. Practice Test: Question Set - 06

1. The metal used to recover copper from a solution of copper sulphate is
    (A) Na
    (B) Ag
    (C) Hg
    (D) Fe
2. The main buffer system of the human blood is
    (A) H2CO3 - HCO3
    (B) H2CO3 - CO32-
    (C) CH3COOH - CH3COO-
    (D) NH2CONH2 - NH2CONH+
3. The octane number of zero is assigned to
    (A) 2-methyl octane
    (B) n-heptane
    (C) iso-octane
    (D) 3-methyl octane
4. The nuclear particles which are assumed to hold the nucleons together are
    (A) Electrons
    (B) Positrons
    (C) Neutrons
    (D) Mesons
5. The number of waves in n × 10th Bohr's orbit are
    (A) n2
    (B) n
    (C) n-2
    (D) n3
6. The gas used for artificial ripening of green fruit is
    (A) Ethylene
    (B) Ethane
    (C) Carbon dioxide
    (D) Acetylene
7. The number of g-molecule of oxygen in 6.02 × 1024 CO molecules is
    (A) 1 gram of molecule
    (B) 0.5 gram of molecule
    (C) 5 gram of molecule
    (D) 10 gram of molecule
8. The number of electrons presents in H+ is
    (A) Zero
    (B) One
    (C) Two
    (D) Three
9. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
    (A) 4
    (B) 5
    (C) 2
    (D) 0
10. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
    (A) Liquation
    (B) Leaching
    (C) Levigation
    (D) Magnetic separation
Show and hide multiple DIV using JavaScript View All Answers

 Next Tests: