………………………… g of water make 1 mole of water.
- A32
- B33
- C16
- ✓18
Answer: D.
View full solution →Question types
Measurement of Matter question types
158 questions across 11 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
158
Questions
11
Question groups
5
Question types
01
Write the Correct Alternative.
28 Q→02Write the following Statement Is True Or False. & Write True Statement.
10 Q→03Answer the following in one sentece.
33 Q→04Name The Following.
9 Q→05Answer the following questions in detail.
13 Q→06complete the Graph/Table.
1 Q→07Answer the following question.
38 Q→08Give Scientific Reason.
8 Q→09Answer the following question.
4 Q→10Fill In The Blanks.
10 Q→11Match The Columns/pair.
4 Q→Sample Questions
Measurement of Matter questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The mass of an atom is concentrated in its ………………………… .
- ✓nucleus
- Belectrons
- Cextranuclear part
- Dprotons
Answer: A.
View full solution →A mole of any substance stands for ………………………… molecules.
- ✓$6.022 \times 10^{23}$
- B$6.022 \times 10^{22}$
- C$60.22 \times 10^{23}$
- D$60.22 \times 10^{22}$
Answer: A.
View full solution →………………………… is a composite radical.
- A$Fe ^{3+}$
- B$Ca ^{2+}$
- ✓$NH _4^{+}$
- D$S ^{2-}$
Answer: C.
View full solution →Molecular formula of sodium sulphate is ………………………..
- A$Na \left( SO _4\right)_2$
- ✓$Na _2 SO _4$
- C$Na _2\left( SO _4\right)_2$
- D$NaSO _4$
Answer: B.
View full solution →Valency of sodium is 2.
Avogadro’s number is $6.022 x 10^{23}$
View full solution →The number of molecules in a given quantity of a substance is determined by its atomic mass
Relative mass of hydrogen is 1.
The proportion by weight of carbon and oxygen in carbon dioxide is 3 : 5.
If 0.2 mol of the following substances are required how many grams of those substances should be taken? Sodium chloride, magnesium oxide, calcium carbonate
1g chlorine
8.8g carbon dioxide
90g water
Deduce the number of molecules of the following compounds in the given quantities. 32g oxygen, 90g water, 8.8g carbon dioxide, 7.1g chlorine.
32g oxygen
32g oxygen
Give two examples of simple radicals.
Give two monoatomic radicals.
Write molecular formula of two ionic compounds containing chlorine.
Name the unit of atomic mass.
The number (p + n) in the atomic nucleus is called as?
Molecular mass of a substance
Unified mass
Atomic mass number
Atomic size determination
Radicals
Write down the cations and anions obtained from the compounds in the following chart.
Write down the symbols for the following elements.
Antimony, Iron, Gold, Silver, Mercury, Lead, Sodium
symbols of the elements you know.
How is an element indicated in Chemistry?
>Determine the valencies of $H, Cl, O$ and $Na$ from the molecular formulae $H_2, HC1, H_2O$ and $NaCl.$
View full solution →What is the type of chemical bond in $NaCl$ and $MgCl2$?
View full solution →The atomic size of sodium is bigger than atomic size of Magnesium.
Atomic size of potassium is bigger than atomic size of sodium.
Valency is always a whole number.
The valency of Magnesium (Mg) is two.
The valency of chlorine $(Cl)$ is one.
View full solution →Using the chart of ions/radicals and the cross-multiplication method, write the chemical formulae of the following compounds : Calcium carbonate, Sodium bicarbonate, Silver chloride, Calcium hydroxide, Magnesium oxide, Ammonium phosphate, Cuprous bromide, Copper sulphate, Potassium nitrate, Sodium dichromate.
- Take a solution of calcium chloride in a conical flask and a solution of sodium sulphate in a test tube.
- Tie a thread to the test tube and insert it in the conical flask.
- Seal the conical flask with an airtight rubber cork.
- Weigh the conical flask using a balance.
- Now tilt the conical flask so that the solution in the test tube gets poured in the conical flask.
- Now weigh the conical flask again.
- Take $56\ g$ calcium oxide in a large conical flask and put $18\ g$ water in it.
- Observe what happens.
- Measure the mass of the substance formed.
- What similarity do you find? Write your inference.
How will the compounds, $MgCl_2$_ and $CaO$ be formed from their elements?
View full solution →Law of constant proportions : J. L. Proust::
Law of conservation of matter : ………………………… .
Law of conservation of matter : ………………………… .
Hydrogen : $\odot$ :: Copper : ………………………… .
View full solution →12: 1 dozen :: 144 : ………………………… .
Positively charged ion : cation:: Negatively charged ion : ………………………… .
Mercurous: $Hg^+$:: Mercuric : ………………………… .
View full solution →| Column ‘A’ | Column B’ |
| Radicals | Names |
| (1) $\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}$ | (a) Carbonate |
| (2) $\mathrm{ClO}_{3}^{-}$ | (b) Chromate |
| (3) $\mathrm{CO}_{3}^{2-}$ | (c) Dichromate |
| (4) $\mathrm{CrO}_{4}^{2-}$ | (d) Chlorate |
| Column ‘A’ | Column ‘B’ |
| Molecule | Molecular mass in grams |
| (1) $h_2$ | (a) $32\ g$ |
| (2) $H_2O$ | (b) $34\ g$ |
| (3) $O_2$ | (c) $2\ g$ |
| (4) $H_2O_2$ | (d) $18\ g$ |
| Column ‘A’ | Column ‘B’ |
| Element | Atomic mass |
| (1) Neon | (a) 35.5 |
| (2) Silicon | (b) 32 |
| (3) Chlorine | (c) 28 |
| (4) Sulphur | (d) 20 |
| Column A’ | Column ‘B’ |
| Example | Atomic radius (in metres) |
| (1) Water molecule (2) Haemoglobin molecule (3) Hydrogen atom |
(a) $10^{-10}$ (b) $10^{-9}$ (c) $10^{-8}$ |
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