When light travels from glass to air , the speed of light will _________.

• A) Increases
• B) Decreases
• C) Depend on angle of incidence
• D) Not change

A straight line graph proportional between distance and time indicates

• A) average velocity
• B) average speed
• C) uniform speed
• D) uniform velocity

The unit of power is represented by

• A) W / s
• B) J / s
• C) J s
• D) W s

The aluminum metal is used for making cooking utensils because metals are_________.

• A) Malleable
• B) Ductile
• C) Solid at room temperature
• D) Good conductors

An object is placed at a distance which is equal to the radius of curvature of the mirror. The size of the object is 2 cm then the size of image will be:

• A) 1.5 cm
• B) 2.0 cm
• C) 1.0 cm
• D) 0.5 cm

In human beings how does the food move through digestive tract?

• A) By cilia
• B) By wavelike muscular contraction
• C) By gravity
• D) By chemical absorption

Which line correctly identifies the steam point on the scales of temperature:
Kelvin/K Celsius/ºC Fahrenheit/ºF

• A) 373 0 32
• B) 373 100 212
• C) 273 100 212
• D) 273 0 32

The smallest blood vessels are ________.

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

Rusting of iron is the __________.

• A) Liquid metal corrosion
• B) Corrosion by other gases
• C) Wet corrosion
• D) Oxidation corrosion

Which of the following process does not involve any chemical reaction ?

• A) Melting of candle wax when heated
• B) Ripening of banana
• C) Digestion of food in our stomach
• D) Burning of paper when heated

The entire planet and all of its living and nonliving parts

• A) biosphere
• B) population
• C) ecosystem
• D) community

The study of motion of objects without reference to mass and force is called:

• A) mechanics
• B) geneal relativity
• C) kinematics
• D) dynamics

The Colour of flame of Na salts.

• A) Carmines
• B) Brown
• C) Violet
• D) Yellow

Temperature is a property which determines:

• A) Whether a body will feel hot or cold to touch
• B) How much total absolute energy a body has
• C) In which direction heat will flow between two systems
• D) How much heat a body contains

If pressure of gas increases 2 times at constant temperature, the final volume of gas would be ____________.

• A) 1/4 V
• B) 1/2 V
• C) 2 V
• D) 3 V

Common isotopes of oxygen has________neutrons

• A) 10
• B) 9
• C) 8
• D) 12

What is name of chemical bond between two atoms where both bonding electrons donated by a single atom?

• A) Ionic bond
• B) Coordinate covalent bond
• C) Hydrogen bond
• D) Covalent bond

Between the melting point of ice and the boiling point of water there are

• A) 373 degrees Centigrade
• B) 110 degrees Celsius
• C) 273 Kelvin
• D) 180 degrees Fahrenheit

For a force F acting along the horizontal axis, its vertical component equals

• A) F
• B) 1/2 F
• C) 0
• D) 2 F

The principal focus point of human eye is always _________.

• A) In front of retina
• B) In between eye ball and retina
• C) Behind the retina
• D) On retina