MCQs On Hydrogen -Chemistry

Hydrogen

Prepared By: Saif-ur-Rehman Chachar

Question 1: A mixture of carbon monoxide and hydrogen gas is called________gas.
a water gas
b Ammonium gas
c Helium gas
d tear gas

Question 2: Heavy water is used in ______.
a auto mobiles
b nuclear reactors
c atomic reactors

Question 3: Isotopes of all elements differ from each other in their _____________ properties.
a chemical
b Bio chemical
c physical
d Bio physical

Question 4: ____________ is also called heavy hydrogen.
a deuterium
b protuim
c tritium

Question 5: The atomic weight of tritium is __________ amu (1/5/3).
a 3
b 5
c 7
d 1

Question 6: Larger portion of ordinary hydrogen consists of ______
a protuim
b tritiuim
c deuterium

Question 7: Hydrogen has_________ isotopes.
a 1
b 3
c 2
d 4

Question 8: Hydrogen preferably forms.________
a covalent
b ionic
c Basic covalent
d ionic covalent

Question 9: During electrolysis hydrogen gas is deposited at __________
a cathode
b Anode.
c ionic
d covalent

Question 10: Alkali metal hydrides have ________ structures like alkali metalhàlides •
a cubic
b penta
c octa
d hexagonal

Question 11: Hydrogen is a good _________
a acidic
b oxidizing
c basic
d reducing

Question 12: Tritium ____________ radio active isotope.
a is
b are
c is not
d are not

Question 13: The atomic weights of isotopes of all element are different due to different number of________
a electrons
b neutrons
c protons

Question 14: The complex hydrides of the elements of III—A have ___________ structures
a tetrahedral
b hexagonal
c cubic
d octagonal

Question 15: Salt like hydrides have ___________ melting and boiling points.
a high
b low
c medium