Class 11 – Chemistry - Chapter 1

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One of the following can be the definition of a Limiting Reactant

Which produces minimum amount of product moles

Which does not produce minimum amount of product moles

Which produces maximum amount of product moles

Which does not produce maximum amount of product moles

The number of moles of CO2which contain 8.0 g of oxygen

0.25

1.30

1.25

0.34

How many Isotopes does the Bromine has

4

8

2

1

In mass spectrometry, ions are separated on the basis of.

Only Masses

Mass to Change Ratio

Only Charges

Masses and Weights

The volume occupied by 1.4 g of N2 at S.T.P is

1.20dm3

1.12dm3

1.50dm3

None

How many moles contains hydrogen atoms in a 3.2g of methane CH4

1.38

0.3

0.8

1.80

In mass spectrometry, ions are produced by

None

Passing gas through low voltage plates

Passing protons through gas molecules

Throwing fast moving electrons on gas molecules

9 grams of ice contains how many H20 (water) molecules

6.02 x 10²³

10.04 x 10⁵

3.01 x 10²³

4.02 x 10⁵

How many moles of oxygen are needed if four moles of Sulphur dioxide are oxidized to Sulphur trioxide

3.0

1.0

2.3

2.0

How many Isotopes does the Tin has

1

12

11

How many Isotopes does the Palladium has

4

10

6

8

1.4 g on N₂at S.T.P occupy a volume ....

1.12 dm³

2.19 dm³

22.24 dm³

2.26 dm

How many times one molecule of hemoglobin is heavier than one atom of hydrogen

68000

10000

72000

64000

The number of Al³⁺ ions in AlCl₃is 2.007 x 10²³. The number of Cl- ions are.

8.02 x 10²³

8.02 x 10²²

8.08 x 10²⁰

6.02 x 10²³

C02 produced during combustion analysis is absorbed in

None

50% KOH

P2O2

Cacl2

Chlorine atom and Chloride ions

None

Are Allotropes of Chloride

Have Same Number of Protons

Have Same Number of Electrons

How many moles of CO are present having 12.04 x 10²³molecules of CO2.

2.3 Moles

None

2.1 Mols

1.5 Mols

CO+ is an example of

A stable molecule

Anionic molecular ion

Cationic molecular ion

A neutral ion

The actual yield is less than the actual yield normally due to the reason

Have same number of electrons

Reactions are not completed fully

That the product gets lost during the handling

None

How many Isotopes does the Nickel has

12

4

5

10

Class 11 – Chemistry – Chapter 1

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