English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10

Which of the following statement is incorrect? - Science

Advertisements
Advertisements

Question

Which of the following statement is incorrect?

Options

  • 1 gram of C – 12 contains Avogadro’s number of atoms.

  • One mole of oxygen gas contains Avogadro’s number of molecules.

  • One mole of hydrogen gas contains Avogadro’s number of atoms.

  • One mole of electrons stands for 6.023 × 1023 electrons.

MCQ

Solution

1 gram of C – 12 contains Avogadro’s number of atoms.

shaalaa.com
Fundamental Laws of Gases - Avogadro’s Law
  Is there an error in this question or solution?
Chapter 7: Atoms and Molecules - Evaluation [Page 103]

APPEARS IN

Samacheer Kalvi Science [English] Class 10 SSLC TN Board
Chapter 7 Atoms and Molecules
Evaluation | Q I. 6. | Page 103

RELATED QUESTIONS

A gas cylinder contains 12 x 1024 molecules of oxygen gas.

If Avogadro’s number is 6 x 1023; Calculate:

1)The mass of oxygen present in the cylinder.

2) The volume of oxygen at S.T.P. present in the cylinder. [O = 16]


State Avogadro's Law.


Define atomicity of a gas.


Samples of the gases O2, N2, CO2 and CO under the same conditions of temperature and pressure contain the same number of molecules represented by X. The molecules of Oxygen, occupy V litres and have a mass of 8 g. Under the same conditions of temperature and pressure:
In answering the above questions, which law have you used?


Choose the correct alternative :
The gas laws which relates the volume of a gas to the number of molecules of the gas is :


A gas cylinder contains 24 × 1024 molecules of nitrogen gas. If Avogadro's number is 6 × 1023 and the relative atomic mass of nitrogen is 14, calculate the mass of nitrogen gas in the cylinder.


Solve the following:

A vessel contains X number of molecules of hydrogen gas at a certain temperature and pressure. How many molecules of nitrogen gas would be present in the same vessel under the same conditions of temperature and pressure?


A gas cylinder contain 12 × 1024 molecules of oxygen gas
If Avogadro's number is 6 × 1023,
calculate :
(i) The mass of oxygen present in the cylinder.
(ii) The volume of oxygen at STP present in the Cylinder[O=16]


State : Avogadro's law


You have collected

  1. 2 litres of CO2
  2. 3 litres of chlorine
  3.  5 litres of hydrogen
  4. 4 litres of nitrogen and
  5. 1 litre of SO2,

under similar conditions of temperature and pressure. Which gas sample will have the greatest number of molecules? Justify your answer.


The gases chlorine, nitrogen, ammonia and sulphur dioxide are collected under the same conditions of temperature and pressure. The following table gives the volumes of gases collected and the number of molecules (x) in 20 litres of nitrogen. You are to complete the table giving the number of molecules in the other gases in terms of x.

Gas Volume (in litres) Number of molecules
Chlorine 10  x
Nitrogen 20
Ammonia 20
Sulphur dioxide 5

What is the value of Avogadro's number?


Define or explain the term

Avogadro's number


What are the main applications of Avogadro's Law?


How dose Avogadro's Law explain Gay-Lussac's Law of combining volumes?


Calculate :

The weight of 1022 atoms of carbon   [C = 12, Avogadro’s No. = `6xx10^23 ]`


Samples of the gases O2, N2, CO2 and CO under the same conditions of temperature and pressure contain the same number of molecules x. The molecules of oxygen occupy V litres and have a mass of 8 g under the same conditions of temperature and pressure.

What is the volume occupied by:

  1. x molecules of N2,
  2. 3x molecules of CO,
  3. What is the mass of CO2 in grams?
  4. In answering the above questions, which law have you used?

The gases hydrogen, oxygen, carbon dioxide, sulphur dioxide, and chlorine are arranged in order of their increasing relative molecular masses. Given 8 g of each gas at STP, which gas will contain the least number of molecules and which gas the most?


State the atomicity of Sulphur.


You have collected

  1. 2 litres of CO2
  2. 3 litres of chlorine
  3. 5 litres of hydrogen
  4. 4 litres of nitrogen and
  5. 1 litre of SO2

under similar conditions of temperature and pressure. Which gas sample will have the least number of molecules? Justify your answers.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×