Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 92

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Calculate the amount of $H_{2}$ which is left unreacted in the given reaction:
$2 H_{2} + O_{2} ⟶ 2 H_{2} O$
If $8 g$ of $H_{2}$ is mixed with $16 g O_{2} ?$

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Important Questions on Some Basic Concepts of Chemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 93

If

30 ml

of

H_{2}

and

20 ml

of

O_{2}

react to form water, what is left at the end of the reaction?

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 94

How many moles of

Zn ({FeS}_{2})

can be made from

2

moles zinc,

3

moles iron and

5

moles sulphur?

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 95

The maximum number of molecules is present in

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 96

There are $6 . 02 \times 10^{22}$ molecules each of $N_{2}, O_{2} and H_{2}$ which are mixed together at $760 mm$ and $273 K$ . The mass of the mixture in grams is:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 97

A bottle of cold drink contains 200 mL liquid in which

C O_{2}

is 0.1 molar. Suppose

C O_{2}

behaves like an ideals gas, the volume of the dissolved

C O_{2}

at STP is

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 98

Assuming petrol is isooctane

(C_{8} H_{18})

and has a density of

0.8 {gmm}^{- 1} . 1.425

litres of petrol on complete combustion will consume.

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 99

Which of the following relations is incorrect for solutions?

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 100

How many millilitres of

0.1 N H_{2} {SO}_{4}

solution will be required for complete reaction with a solution containing

0.125 g

of pure

{Na}_{2} {CO}_{3}

: