What is the percentage of carbon dioxide in exhaled air?
- (A) 21%
- (B) 0.04%
- (C) 4.4%
- (D) 16.4%
- (C) 4.4%
Which is the smallest gland in human body?
- (A) Thyroid gland
- (B) Pituitary gland
- (C) Pineal gland
- (D) Adrenal gland
- (C) Pineal gland
A healthy human brain contains _______ neurons.
- (A) 100 billion
- (B) 200 billion
- (C) 300 billion
- (D) 400 billion
- (A) 100 billion
The largest gland in the human body is:
- (A) Heart
- (B) Stomach
- (C) Liver
- (D) Kidney
- (C) Liver
Compressed Natural Gas (CNG) has the same chemical composition as that of:
- (A) LPG
- (B) Sui gas
- (C) Tear gas
- (D) Poison gas
- (B) Sui gas
The instrument that is used to measure the speed of wind is called:
- (A) Anemometer
- (B) Hydrometer
- (C) Speedometer
- (D) Tachometer
- (A) Anemometer
The gas used in advertising sign lamps is:
- (A) Helium
- (B) Argon
- (C) Neon
- (D) Krypton
- (C) Neon
Which food the highest concentration of protein and iron?
- (A) Fruits
- (B) Vegetables
- (C) Meat
- (D) Bakery products
- (C) Meat
The process of photosynthesis in plants takes place in:
- (A) Stem
- (B) Leaf
- (C) Flower
- (D) Root
- (B) Leaf
Soft drinks such as colas contain significant quantities of:
- (A) Nicotine
- (B) Renin
- (C) Caffeine
- (D) Tannin
- (C) Caffeine