MCQs

Q111: The chemical formula of ozone gas is ______?

• A) NO2
• B) O3
• C) CO2

Q112: Which gas can turn lime water milky?

• A) O2
• B) NO2
• C) CO2

Q113: The speed of light in vacuum is about

• A) 300 Million meters per second
• B) 300 Million meters per hour
• C) 300,000 kilometers per second

Q114: The gas required for respiration are ______?

• A) Glucose (C6H12O6) and Oxygen (O2)
• B) Glucose (C6H12O6) and Water (H2O)
• C) Carbon Dioxide (CO2) and Water (H2O)

Q115: Lactose is ______?

• A) Grape sugar
• B) Honey sugar
• C) Milk sugar

Q116: The blood vessels that carry blood from other parts of body to the heart are called?

• A) Arteries
• B) Capillaries
• C) Veins

Q117: The black dot at the center of the eye is called?

• A) Retina
• B) Iris
• C) Pupil

Q118: The coloured part of the eye is called?

• A) Pupil
• B) Iris
• C) Cornea

Q119: A group of similar cells combine together to form _____?

• A) Organ
• B) System
• C) Tissue

Q120: Which are the found in fruits, vegetables, grains and sea food?

• A) Minerals
• B) Enzymes
• C) Hormones