MCQs on Hydrogen Bonding
1. Which one of the following is not an isotope of hydrogen?
A. Deuterium
B. Tritium
C. Ortho hydrogen
D. None of these
Answer:::: C.
2. Out of the two allotropic forms of dihydrogen, the form with lesser molecular energy is
A. ortho
B. meta
C. para
D. All have the same energy
Answer:::: C.
3. Non-stoichiometric hydrides are produced by
A. palladium, vanadium
B. manganese, lithium
C. nitrogen, fluorine
D. carbon, nickel
Answer:::: A.
4. The boiling point of water is exceptionally high because
A. there is a covalent bond between H and O
B. water molecule is linear
C. water molecules associate due to hydrogen bonding
D. water molecules are not linear
Answer:::: C.
5. Hydrogen can behave as a metal
A. at very high temperature
B. at very low temperature
C. at very high pressure
D. at very low pressure
Answer:::: C.
6. When two ice cubes are pressed over each other, they unite to form one cube. Which of the following forces is responsible to hold them together?
A. hydrogen bond formation
B. van der Waals forces
C. covalent attraction
D. ionic interaction
Answer:::: A.
7. Hydrogen will not reduce
A. heated cupric oxide
B. heated ferric oxide
C. heated stannic oxide
D. heated aluminium oxide
Answer:::: (d)
8. Which is true about different forms of hydrogen?
A. ortho hydrogen has same spins of two nuclei clockwise or anticlockwise
B. Para hydrogen has different spins of two nuclei
C. At absolute zero temperature, there is a 100% para form and at high temperature, there is 75% ortho form
D. all are correct
Answer:::: (d)
9. The reagent commonly used to determine hardness of water titrimetrically is
A. oxalic acid
B. sodium thiosulphate
C. sodium citrate
D. disodium salt of EDTA
Answer:::: (d)
10. Metal which does not react with cold water but evolves H2 with steam is
A. Na
B.K
C. Pt
D. Mg
Answer:::: (d)
