The element which is most abundant in the Earth’s surface is:
- (A) Silicon
- (B) Iron
- (C) Aluminum
- (D) Oxygen
- (D) Oxygen
The gas commonly used in balloons is:
- (A) Hydrogen
- (B) Helium
- (C) Oxygen
- (D) Carbon dioxide
- (B) Helium
Compressed Natural Gas (CNG) has the same chemical composition as that of:
- (A) LPG
- (B) Tear Gas
- (C) Sui Gas
- (D) Poison Gas
- (C) Sui Gas
An ordinary mobile phone communicates by using:
- (A) Sound waves
- (B) Radio waves
- (C) Ultraviolet waves
- (D) Infrared waves
- (B) Radio waves
Another organ that filters blood besides the kidneys in the human body is:
- (A) Pancreas
- (B) Heart
- (C) Spleen
- (D) Liver
- (C) Spleen
An example of a heredity disease is:
- (A) Cholera
- (B) Hemophilia
- (C) Polio
- (D) Typhoid
- (B) Hemophilia
Exposure to sunlight results in formation of _______ in the body.
- (A) Vitamin A
- (B) Vitamin C
- (C) Vitamin K
- (D) Vitamin D
- (C) Vitamin K
The first scientist to prove that the Earth revolves around the Sun was:
- (A) Johannes Kepler
- (B) Galileo Galilei
- (C) Nicolaus Copernicus
- (D) Sir Isaac Newton
- (C) Nicolaus Copernicus
The instrument for measuring the speed of wind is:
- (A) Anemometer
- (B) Speedometer
- (C) Hydrometer
- (D) Tachometer
- (A) Anemometer
The number of pairs of ribs in human body is:
- (A) 12
- (B) 15
- (C) 20
- (D) 30
- (A) 12