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AE-JE Foundation: General Science: Atoms, Molecules & periodic table

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Question 1

Group zero elements are known as _______.

Question 2

What is atomic number of Argon?

Question 3

Formula that shows arrangement of atoms in a compound is called ___________.

Question 4

Which of following is the atomic number which falls in the 2nd group and the 4th period of periodic table?

Question 5

Atomic mass of Oxygen is 16 and atomic number is 8. What is the mass in gms of 2 moles of oxygen gas?

Question 6

Atomic number of which of the following elements is greater than that of iron?

Question 7

In which of the following molecules, all atoms are coplanar?

Question 8

Which of the following statements are true :
i. Atom has only positive charges, which is expressed in coulomb.
ii. An electrical phenomenon is caused by flow of free electrons from one atom to another.
iii. The characteristics of current electricity are opposite to those of static electricity.
iv. Wires are made up of conductors such as copper or aluminum.

Question 9

In crystalline solids like diamond, the constituent particles which are non-metallic atoms are linked to the adjacent atoms by ?

Question 10

Lother Meyers theory based on ?

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