Atoms and Molecules , IX (Session - 1)

Name :

Class : IX-D

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Molecules can be termed as ? (Generally)

*Choose the most appropriate option -

• Cluster of Elements

• Cluster of Compounds

• Cluster of Mixtures

• Cluster of Atoms

Molecular Mass of Glucose (C₆H₁₂O₆).

• 100 grams/Mole

  (Approx)

• 110 grams / Mole (Approx)

• 180 grams/Mole

  (Approx)

• 0.8809 gram/Mole

  (Approx)

A sample of NH₃ molecule irrespective of source contains 82.35% Nitrogen and 17.65% of Hydrogen by mass.

QUESTION : The above data/extract/source supports which of the following law ?

• Law of Conservation of Mass

• Law of Constant Proportion

• Dalton's Atomic Postulate

• Law of conservation of Momentum

Molecular Formula of Aluminium Hydroxide

• Al(HO)_-3

• Al(OH)₃

• H₂Al₃

• All (a),(b) and (c)

Atomic Symbol of Gold

(Only type the Answer i.e. - for sodium "Na" is the answer")

Chemical formula of Silver

Name the element X

• Al

• Zn

• Cl

• H

Number of proton and electron in element X

• Proton : 13

  Electron : 13

• Proton : 13

  Electron : 10

• Proton : X

  Electron : Y

• Proton : X

  Electron : X

Atomic Mass of H,C,O

*Choose the correct option in order

• (16,12,0)u

• (1,12,16)u

• (1,1,100)amu

• X g