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In the experiment of “To prove law of co...

In the experiment of “To prove law of conservation of mass”, Manoj found that weight of ‘Mg’ in a closed test tube is not equal to the weight of ‘MgO’ after burning. The reason may be

A

Law of conservation of mass is not applicable to some chemical changes

B

Some gas was escaped in this experiment

C

He was used simple balance in weight

D

Above all

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VGS PUBLICATION-BRILLIANT-ATOMS AND MOLECULES-OBJECTIVE TYPE QUESTION
  1. Assertion (A): Atomic mass has no units. Reason ( R): Atomic mass is...

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  2. An iron rod changed into iron oxide by rusting. Guess how the weights ...

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  3. In the experiment of “To prove law of conservation of mass”, Manoj fou...

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  4. CO:1:1::CO2:……………?

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  5. Molecules in water is H2O then molecules in the Hydrogen is

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  6. Why did symbol of copper taken as 'Cu'?

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  7. Statement (A) : Symbol of carbon is ‘C’ whereas symbol of calcium is ‘...

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  8. Generally all inert gases like , He,Ne,Ar,Kr,Xe are available as monoa...

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  9. IF 'x^(-1)' and Na'x' then 'x' may be

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  10. The valencies of 'Mg' and 'O' are……..respectively in MgO.

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  11. 'X2 Y','X' H 'Y', 'X' OH Guess X and Y.

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  12. By using Ag^+,Cl^-,Na^+,OH^- How many substance can be formed?

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  13. Molar mass of molecule x= 2 gr Molar mass of molecule y= 32 gr Mol...

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  14. No. of molecules in 44 grams of CO2 is equal to

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  15. In this experiment which gas is produced?

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  16. Law of conservation of mass was proposed by

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  17. Law of conservation of mass was experimentally verified by

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  18. Law of constant proportions was proposed by

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  19. What is the original name of Kanada, an Indian sage, who proposed anu ...

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  20. Initial letter of an element written in capitals should represent that...

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