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

The SI unit of energy is:

• A) Pascal
• B) Watt
• C) Newton
• D) Joule

An engineer designs different machines. Which is the most efficient?
Input Energy Useful Output Wastage

• A) 450 J 248 J 202 J
• B) 731 J 468 J 263 J
• C) 255 J 153 J 102 J
• D) 510 J 357 J 153 J

The example of giant molecule is______

• A) SiC
• B) Diamond
• C) AgCl
• D) AlN

The Component which is present in larger quantity in solution is known as

• A) Colloids
• B) Solvent
• C) Solute
• D) Mixture

When mercury level rises in the clinical thermometer, the mercury in capillary tube does not contract because?

• A) Mercury takes a long time to contract
• B) The amount of mercury use is very small
• C) The capillary tube is very narrow
• D) The capillary tube has a small constriction near the bulb

The metal reacting readily with co0ld water is.

• A) Na
• B) Ag
• C) Mg
• D) Au

In optical fiber the refractive index of core in comparison to that of cladding is:

• A) Equal
• B) Greater
• C) Smaller
• D) Minor