The word “Atom” is from a Greek word meaning:
- (A) Small
- (B) Unseen
- (C) Visible
- (D) Indivisible
- (D) Indivisible
The smallest particle of matter is known as:
- (A) Atom
- (B) Molecule
- (C) Element
- (D) Radical
- (A) Atom
Which element is present in all organic compounds?
- (A) Carbon
- (B) Hydrogen
- (C) Oxygen
- (D) Nitrogen
- (A) Carbon
Which gas is used in electrical line tester?
- (A) Neon
- (B) Xenon
- (C) Argon
- (D) Krypton
- (A) Neon
Atom is made up of how many different kinds of sub-atomic particles?
- (A) Two
- (B) Three
- (C) Four
- (D) Five
- (B) Three
Which gas is known as the “Life supporting”?
- (A) Hydrogen
- (B) Oxygen
- (C) Nitrogen
- (D) Carbon dioxide
- (B) Oxygen
Name the metal which has been used in ancient time?
- (A) Silver
- (B) Iron
- (C) Titanium
- (D) Copper
- (D) Copper
What is the oldest most widely drug on Earth?
- (A) Alcohol
- (B) Aspirin
- (C) Harter
- (D) Morphine
- (A) Alcohol
The gas used in refrigerators in order to cool the water is:
- (A) Hydrogen
- (B) Ammonia
- (C) Carbon dioxide
- (D) Nitrogen oxide
- (B) Ammonia
Atoms are composed of:
- (A) Electron only
- (B) Protons only
- (C) Electrons and nuclei
- (D) Electrons and protons
- (C) Electrons and nuclei
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