Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 47

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Sulphur exist in different allotropic forms like $S_{2}, S_{6}$ and $S_{8}$ etc. If equal moles of these three forms are taken in separate containers, then the ratio of number of atoms present in them respectively is:

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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 48

The charge on

1

gram of

{Al}^{3 +}

ions is :

(e = electronic charge)

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 49

From

392 mg

of

H_{2} {SO}_{4}, 1.204 \times 10^{21}

molecules of

H_{2} {SO}_{4}

are removed. How many moles of

H_{2} {SO}_{4}

are left:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 50

The maximum

%

of

N

is found in:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 51

A student was assigned a certain task by his teacher in chemistry lab. During the experiment, student dropped the flask containing

250 ml, 3

molar

NaOH

solution. Due to this

50 ml

of solution out of

250 ml

had fallen on the floor. Thinking that the teacher may punish him for this mistake, he replenished the leftover solution with

50 ml

of water. The new molarity of

NaOH

solution will be.

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 52

The molality of a sulphuric acid solution is

0.2 .

Calculate the total weight of the solution having

100 g

of solvent.

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 53

How many grams of

{NH}_{3}

can be obtained from hydrolysis of

1

mol of Aluminium nitride?

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 54

For the reaction

2 P + Q \to R, 8

mol of

P

and excess of

Q

will produce:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 55

If $1.5$ moles of oxygen combine with $Al$ to form ${Al}_{2} O_{3}$ , the weight of $Al$ used in the reaction is:

The molar mass of Aluminium $= 27 g / mol$ .