Basic Concepts of Chemistry- 01

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Q1. Which one will have maximum numbers of water molecules? *

1 point

18 grams of water

18 molecules of water

1.8 grams of water

18 moles of water

Q2. The number of atoms present in 0.1 moles of a triatomic gas is *

1 point

1.806 × 10^22

3.600 × 10^23

1.806 × 10^23

6.026 × 10^22

Q3. Empirical formula of Glucose is - *

1 point

CHO2

CH2O

C2H2O

CHO

Q4. A container has an equal mass of H2, O2 and CH4 at 27℃, the ratio of their volume is *

1 point

8:16:1

16:1:2

8:1:2

16:8:1

Q5. There are two chlorides of sulphur S2Cl2 and SCl2. What is the equivalent mass of S in SCl2 *

1 point

32 g/mole

64.8 g/mole

16 g/mole

8 g/mole

Q6. Which of the following terms are unitless? *

1 point

Molarity

Mass percent

Molality

Mole fraction

Q7. 16 g of O2 has same number of molecules as in *

1 point

10 gms of H2

14 gms of N2

16 gms of CO

28 gms of N2

Q8. Number of significant Figures in the numer 1.065 *

1 point

Q9. How many moles of atom are contained in 32.5 gms of Zn (MM = 63.5) *

1 point

0.500

0.200

0.0118

11.50

Q10. What will be the molality of the solution containing 18.25 g of HCl gas in 500 g of water? *

1 point

1 m

0.1 m

1 M

0.5 m

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