Chemistry – Class 11 Mock Test 1

10%

Question 1 of 10

1. A compound consists of 52.17% of carbon, 13.04% of hydrogen and 34.78% of oxygen. Find the molecular formula if the given molecular weight of the compound is 46g.

CH₂O

C₂H₅OH

C₂H₆

C₆H₁₂O₆

Question 1 of 10

Question 2 of 10

2. What is the abbreviation of amu?

Atomic matter unit

Atomic mass unit

At mass unity

Atomic mass unified

Question 2 of 10

Question 3 of 10

3. What is 1 Dalton?

a unified mass unit, 1.660539040(20)×10⁻²⁷kg

a unified mass unit, 1.360539040(20)×10⁻²⁷kg

a unified mass unit, 1.640539040(20)×10⁻²⁷kg

Question 3 of 10

Question 4 of 10

4. The paintings on the walls of Ajanta and Ellora cave were based on ________

Sushruta Samhita

Charaka Samhita

Varahmihir's Brihat Samhitha

Rasopanishada

Question 4 of 10

Question 5 of 10

5. How many significant figures does 0.057 have?

Question 5 of 10

Question 6 of 10

6. As, per the current system, carbon-12 has been taken as the standard for measuring atomic masses.

False

True

Question 6 of 10

Question 7 of 10

7. A and B are two solutions that are mixed. Calculate the resultant solution’s molarity.

Initial Solutions	Molarity	Volume
A	1.3	100ml
B	0.8	500ml

0.8 mol/L

0.88 mol/L

1.05 mol/L

1.3 mol/L

Question 7 of 10

Question 8 of 10

8. Which of the following is true regarding molecular formula?

the same as the empirical ratio

rational numbered ratio

simplest possible whole numbered ratio

actual whole numbered ratio

Question 8 of 10

Question 9 of 10

9. ______ is the sum of atomic masses of the elements present in a molecule.

Molecular mass

Atomic mass

Average atomic mass

Gram formula mass

Question 9 of 10

Question 10 of 10

10. Which of the following is an empirical formula?

C₆H₁₂O₆

H₂O₂

C₂H₆

CH₄

Question 10 of 10