Some Basic Concepts of Chemistry PYQs - Last 5 Years

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All Some Basic Concepts of Chemistry PYQs Last 10 Years Create chapter test

Practice 71 MHT CET Chemistry questions from Some Basic Concepts of Chemistry. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 5 Years Some Basic Concepts of Chemistry Questions

Showing 50 of 71 filtered questions.

1Some Basic Concepts Of Chemistry

What is the SI unit of luminous intensity ?

2Some Basic Concepts Of Chemistry

What is average atomic mass of chlorine if its two isotopes $\text{Cl}^{35}$ and $\text{Cl}^{37}$ exists in relative abundance of $75\%$ and $25\%$ respectively ?

3Some Basic Concepts Of Chemistry

What is the number of molecules in 2.125 g of ammonia?

4Some Basic Concepts Of Chemistry

What quantity of $\text{H}_2\text{O}$ in gram is present in $0.25$ mol of it?

5Some Basic Concepts Of Chemistry

Chlorine has two isotopes $\text{Cl}^{37}$ and $\text{Cl}^{35}$ with percentage abundance of $25\%$ and $75\%$ respectively. Find average atomic mass of chlorine ?

6Some Basic Concepts Of Chemistry

How many moles of potassium chlorate are heated to produce $22.4\ \text{lit}$ of oxygen at STP ?

7Some Basic Concepts Of Chemistry

Find the number of molecules present in 70 g dinitrogen.

8Some Basic Concepts Of Chemistry

Calculate the number of molecules present in 2.24 $\text{dm}^3$ of carbon dioxide at STP ?

9Some Basic Concepts Of Chemistry

How many moles of potassium chlorate are heated to produce $11 \cdot 2$ L oxygen at STP ?

10Some Basic Concepts Of Chemistry

Calculate the amount of aluminium present in $\text{Al}_2(\text{SO}_4)_3$ if the compound contains 4 g of sulfur.[Molar mass of sulfur = 32 g/mol , Molar mass of Al =27 g/mol ]

11Some Basic Concepts Of Chemistry

The ratio of mass of 'x' atoms of an element to mass of carbon atoms is 9:1. Find the mass of 1 mol of x if molar mass of carbon is 12 g/mol.

12Some Basic Concepts Of Chemistry

What is the approximate mass of the precipitate formed when $50$ mL of $16.9\%$ solution of $\text{AgNO}_3$ is mixed with $50$ mL of $7.45\%$ KCl solution? (Molar mass of $\text{AgNO}_3 = 169$ g/mol, KCl $= 74.5$ g/mol, AgCl $= 143.3$ g/mol...

13Some Basic Concepts Of Chemistry

What is number of hydrogen molecules needed to synthesize 3.4 g of ammonia by reaction with nitrogen?

14Some Basic Concepts Of Chemistry

Find the mass of sodium carbonate in grams to form 100 ml 0.1 M solution in water?( Molar mass of $\text{Na}_2\text{CO}_3$ = 106 g/mol)

15Some Basic Concepts Of Chemistry

Which of the following contains maximum number of molecules?

16Some Basic Concepts Of Chemistry

$1$ g of $\text{H}_2$ contains the same number of molecules as in

17Some Basic Concepts Of Chemistry

Calculate the mass of $100$ molecules of oxygen in amu and in grams.

18Some Basic Concepts Of Chemistry

Calculate the volume of $99$ g of $\text{CO}_2$ at STP ?

19Some Basic Concepts Of Chemistry

What is the number of hydrogen atoms present in 5.4 g of urea?

20Some Basic Concepts Of Chemistry

Find out the total number of electrons present in 3.2 g methane?

21Some Basic Concepts Of Chemistry

Calculate $\%$ by mass of a $\mathrm{H}_2 \mathrm{O}_2$ solution that is 67.2 by volume.

22Some Basic Concepts Of Chemistry

Calculate number of molecules present in 5.4 g of urea (Molar mass of urea $=60 \mathrm{~g} \mathrm{~mol}^{-1}$ )

23Some Basic Concepts Of Chemistry

The vapour density of a certain gas is 16 . What is the volume occupied by 8 g of gas at STP assuming ideal behaviour?

24Some Basic Concepts Of Chemistry

Calculate percentage atom economy when 46 g ethanol is obtained from 64.5 g chloroethane and $56 \mathrm{~g} \mathrm{KOH}_{(\mathrm{aq})}$.

25Some Basic Concepts Of Chemistry

Find out total number of electrons present in 1.6 g methane?

26Some Basic Concepts Of Chemistry

Find the volume of 56 g dinitrogen at STP

27Some Basic Concepts Of Chemistry

Find the number of millimoles for 0.160 g sodium hydroxide.

28Some Basic Concepts Of Chemistry

What is vapour density of $\mathrm{O}_2$ gas?

29Some Basic Concepts Of Chemistry

Calculate the number of $\mathrm{Cl}^{-}$ions in 222 g unhydrous calcium chloride?
(At. mass $\mathrm{Ca}=40, \mathrm{Cl}=35.5$ )

30Some Basic Concepts Of Chemistry

Find the number of water molecules in 1 mL of water vapours at STP?

31Some Basic Concepts Of Chemistry

A gaseous mixture of $\mathrm{O}_2$ and $\mathrm{CH}_4$ are in the ratio $1: 4$ by mass. Find the ratio of their molecules.

32Some Basic Concepts Of Chemistry

Find the number of moles present in 0.448 L of dihydrogen at STP.

33Some Basic Concepts Of Chemistry

Calculate the number of $\mathrm{Ca}^{2+}$ ion in 222 g anhydrous calcium chloride? (At. Mass $\mathrm{Ca}=40, \mathrm{Cl}=35.5$ )

34Some Basic Concepts Of Chemistry

What is the mass in grams of 0.25 mol water?

35Some Basic Concepts Of Chemistry

If salicylic acid ( 138 u ) reacts with acetic anhydride ( 102 u ) to from aspirin ( 180 u ) calculate \% atom economy.

36Some Basic Concepts Of Chemistry

Find out number of carbon atoms present in 0.35 mole of glucose.

37Some Basic Concepts Of Chemistry

What is the molar mass of compound represented by following structure formula?

38Some Basic Concepts Of Chemistry

In a chemical reaction, sum of formula weight of all reactants is 274 u and atom economy is $50 \%$, calculate formula weight of desired product?

39Some Basic Concepts Of Chemistry

What is the volume occupied by 0.5 mol of $\mathrm{CO}_2$ at STP?

40Some Basic Concepts Of Chemistry

Find the mass of potassium chlorate required to liberate $5.6 \mathrm{dm}^3$ of oxygen gas at STP? (molar mass of $\mathrm{KClO}_3=122.5 \mathrm{~g} / \mathrm{mol}$ )

41Some Basic Concepts Of Chemistry

What is the number of moles of Cl atoms and N atoms respectively present in n moles of tear gas?

42Some Basic Concepts Of Chemistry

What is the volume occupied by 1 molecule of water, if its density is $1 \mathrm{~g} \mathrm{~cm}^{-3}$ ?

43Some Basic Concepts Of Chemistry

Chlorine has two isotopes ${ }^{35} \mathrm{Cl}$ and ${ }^{37} \mathrm{Cl}$ with average atomic mass of 35.5 . What is the ratio of their relative abundance respectively?

44Some Basic Concepts Of Chemistry

Calculate mass in kg of $4.48 \mathrm{dm}^3$ carbon dioxide at STP.

45Some Basic Concepts Of Chemistry

Calculate number of moles present in $9.10 \times 10^{-2} \mathrm{~kg}$ of water.

46Some Basic Concepts Of Chemistry

Which of the following pair of compounds does not demonstrate the law of multiple proportion?

47Some Basic Concepts Of Chemistry

"A given compound always contains the same proportion of elements" is a statement of -

48Some Basic Concepts Of Chemistry

What is the mass in kg of 5 mole of acetic acid $\left(\mathrm{mol}\right.$. mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ ?

49Some Basic Concepts Of Chemistry

What is the molar mass of third member of homologous series if the molar mass of first member is 46 g ?

50Some Basic Concepts Of Chemistry

How many moles of carbon atoms are present in 3.6 kg of carbon?