🧪
Class 11 Chemistry — Chapter 1: Some Basic Concepts of Chemistry
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 11 Chemistry, Chapter 1 (Some Basic Concepts of Chemistry). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
Q1Easy
Molar mass of H₂O:
A.18 g/mol✓ correct
B.20 g/mol
C.16 g/mol
D.2 g/mol
Why
2(1) + 16 = 18.
Q2Medium
Moles in 36 g of water:
A.2✓ correct
B.1
C.36
D.18
Why
36/18 = 2 mol.
Q3Hard
Empirical formula of glucose (C₆H₁₂O₆):
A.CH₂O✓ correct
B.C₂H₄O
C.CHO
D.C₆H₁₂O₆
Why
Divide by 6.
Practise all 90 questions free
Timed quizzes, instant scoring, streaks and XP. Sign in with Google — no card needed.
Start this chapter free →