Magnitude of `pico–' is _____.

Important Questions on Some Basic Concepts of Chemistry

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 14

 After a chemical reaction, the total mass of reactants and products _______________.

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 15

The sum of the masses of reactants is equal to the sum of the masses of products in any chemical reaction. This is in accordance with law of:

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 16

If the law of conservation of mass was to hold true, then $20.8 \mathrm{g}$ of ${\text{BaCl}}_2$, on reaction with $9.8 \mathrm{g}$ of ${\text{H}}_2{\mathrm{SO}}_4$ will produce $7.3 \mathrm{g}$ of $\text{HCl }$and ________ of ${\text{BaSO}}_4$.

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 17

Pure water can be obtained from various sources, but it always contains hydrogen and oxygen, combined in a ratio of $1 : 8$ by weight. This is an example of ___________.

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 18

Two containers of same size are filled separately with ${\text{H}}_2$ gas and ${\text{CO}}_2$ gas. Both the containers are under same temperature and pressure will contain same __________.

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 19

In ${\text{SO}}_2$ and ${\mathrm{SO}}_3$ the ratio of the masses of oxygen that combine with a fixed mass of sulphur is $2 : 3$. This is an example of the law of ________.

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 20

Which of the following reactions has the ratio of volume of the reacting gases and the product as $1:2:2$?

MEDIUM

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Chemistry Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 1 - Some Basic Concepts of Chemistry>Classical Thinking>Q 21

The volume of oxygen required for complete combustion of $0.25 {\mathrm{cm}}^3$ of ${\mathrm{CH}}_4$ at $\mathrm{S}.\mathrm{T}.\mathrm{P}.$is _______${\mathrm{cm}}^3$.