engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 General Science Chemistry Periodic Table
Which of the following holds true according to the properties of hydrogen?
a) Hydrogen is the lightest gas.
b) Hydrogen cannot be corrosive.
c) Deuterium is another name for heavy hydrogen.
1
a only
2
c only
3
a and b only
4
a and c only