General Elective MCQ Question with Answer

General Elective MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 8
What is the chemical symbol for carbon dioxide?

CO2

H2O

CH4

Question No : 9
Who was the first person to orbit the Earth?

Yuri Gagarin

John Glenn

Neil Armstrong

Valentina Tereshkova

Question No : 10
Which planet is known as the Gas Giant?

Mars

Jupiter

Saturn

Uranus

Question No : 11
What is the chemical symbol for calcium carbonate?

CaCO3

CACO3

Ca2CO3

CaCO2

Question No : 12
Which gas is known as the sweet gas due to its pleasant odor?

Hydrogen

Oxygen

Methane

Ethylene

Question No : 13
Which planet is known as the Red Giant?

Mars

Jupiter

Saturn

Mercury

Question No : 14
What is the chemical formula for acetic acid?

CH3COOH

H2SO4

NaOH

C6H12O6