General Science & Ability MCQs 2010

Three elements needed for the healthy growth of plants are:
A) Nitrogen, Phosphorus, Potassium
B) Nitrogen, Carbon, Phosphorus
C) Nitrogen, Potassium, Calcium
D) Nitrogen, Sulfur, Phosphorus

Copper can be converted into gold by:
A) Heating
B) Artificial Radioactivity
C) Electroplating
D) Chemical Reaction

In winter an iron pipe feels colder than a wooden window. This is because wood is:
A) Conductor
B) Non-Conductor
C) Semi-Conductor
D) Not a solid while iron is a solid

The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least:
A) 1120 ft
B) 120 ft
C) 56 ft
D) 100 ft

It is possible to recognize a person in the dark by simply hearing his unique voice. It is because of the:
A) Pitch
B) Frequency
C) Time period
D) Quality

When a ray of sunlight enters a dark room, its straight path becomes visible because of dust particles hanging in the air. This is because dust particles are:
A) Visible
B) Transparent
C) Opaque
D) Invisible

A six feet tall lady wants to see her full image in a plane mirror. The minimum length of the mirror will be:
A) 6 feet
B) 12 feet
C) 4 feet
D) 3 feet

Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by:
A) Conduction
B) Convection
C) Radiation
D) Reflection

The measurement of rainfall is made by an instrument known as:
A) Hygrometer
B) Barometer
C) Hydrometer
D) Rain gauge

Light year is a unit of:
A) Distance
B) Time period
C) Light intensity
D) Speed