All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
NEET Exam  >  NEET Questions  >  Given below are few statements. Mark the stat... Start Learning for Free
SaveJoin the Discussion on the App
Given below are few statements. Mark the statement which is not correct.
  • a)
    Gram atomic mass of an element may be defined as the mass of Avogadro's number of atoms
  • b)
    The molecular mass of a diatomic elementary gas is twice its atomic mass
  • c)
    Gay Lussac's law of chemical combination is valid for all substances
  • d)
    A pure compound has always a fixed proportion of masses of its constituents
Correct answer is option 'C'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Verified Answer
Given below are few statements. Mark the statement which is not correc...
Gay Lussac's law is true only for gaseous substances.
View all questions of this test
Most Upvoted Answer
Given below are few statements. Mark the statement which is not correc...
Explanation:
The correct answer is option 'C' - Gay Lussac's law of chemical combination is not valid for all substances.

Explanation of the other options:

a) Gram atomic mass of an element may be defined as the mass of Avogadro's number of atoms:
This statement is correct. The gram atomic mass of an element is defined as the mass of one mole of atoms of that element. One mole of any substance contains Avogadro's number of particles, which is approximately 6.022 × 10^23. Therefore, the gram atomic mass is the molar mass of the element expressed in grams.

b) The molecular mass of a diatomic elementary gas is twice its atomic mass:
This statement is also correct. Diatomic elementary gases exist as molecules with two atoms bonded together. Since each atom has the same atomic mass, the molecular mass of the diatomic gas is twice the atomic mass.

d) A pure compound always has a fixed proportion of masses of its constituents:
This statement is correct. A pure compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass. The ratio of the masses of the constituent elements in a pure compound is always constant.

Explanation of option 'C':

Gay Lussac's law of chemical combination states that when gases react, the volumes of the reacting gases and the volumes of the gaseous products, if they are also gases, are in a simple whole-number ratio, provided all gases are at the same temperature and pressure. However, this law is not valid for all substances.

The law is only applicable to gases because it is based on the assumption that gases behave ideally, meaning that their particles do not interact with each other and occupy negligible volumes. In reality, not all substances exist as gases, and even when they do, they may not behave ideally.

For example, solids and liquids do not follow Gay Lussac's law because their particles are closely packed and have strong intermolecular forces that prevent them from behaving like ideal gases. Additionally, some gases may deviate from ideal behavior under certain conditions, such as high pressures or low temperatures.

Therefore, Gay Lussac's law of chemical combination is only applicable to gases and cannot be generalized to all substances.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
< Previous Question Next Question >
Explore Courses for NEET exam

Similar NEET Doubts

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: Rate of reaction is a measure of change in concentration of reactant with respect to time.Reason: Rate of reaction is a measure of change in concentration of product with respect to time.

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: The unit of k is independent of order of reaction.Reason: The unit of k is moles L–1s–1.

Top Courses for NEETView all

Top Courses for NEET

Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer?
Question Description
Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Given below are few statements. Mark the statement which is not correct.a)Gram atomic mass of an element may be defined as the mass of Avogadros number of atomsb)The molecular mass of a diatomic elementary gas is twice its atomic massc)Gay Lussacs law of chemical combination is valid for all substancesd)A pure compound has always a fixed proportion of masses of its constituentsCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup