__________is use to kill the bacteria in water.

• A) I
• B) Cl
• C) Br
• D) F

If focal length of a lens is -50 cm, the power of lens wills be_________.

• A) +2 D
• B) -50 D
• C) +50 D
• D) -2 D

The force produced due to gravity is known as _____.

• A) Weight
• B) Tension
• C) Mass
• D) Friction

A liquid is evaporating, causing the liquid to cool. The temperature of the liquid decreases because

• A) The mean kinetic energy of the remaining liquid molecules is decreasing
• B) The number of liquid molecules is decreasing
• C) The pressure above the liquid surface is increasing
• D) The rate of evaporation is increasing

A person sitting inside a moving train is in a state of ……. with respect to the other passengers

• A) variable speed
• B) uniform acceleration
• C) uniform speed
• D) rest

Which element does not corrode?

• A) Gold
• B) Iron
• C) Sodium
• D) Silver

Example of Covalent Hydride is ___________.

• A) H2O
• B) LiH
• C) CaH2
• D) MgH2

Which of the following is NOT a scalar quantity:

• A) distance
• B) velocity
• C) mass
• D) time

A boy is applying a force to move the box along the floor, the work done by kinetic friction is ___.

• A) Zero
• B) Negative
• C) None of theses
• D) Positive

Which type of blood vessels carries blood away from the heart?

• A) Veins
• B) Arteries, veins and capillaries
• C) Capillaries
• D) Arteries

Which line represents a vector that is multiplied by a negative integer less than one
magnitude direction

• A) increases remains the same
• B) decreases remains the same
• C) decreases changes
• D) increases changes

Tension in string due to gravity at rest is always equal to______ of an object.

• A) Momentum
• B) Mass
• C) Density
• D) Weight

The organ that produces urea and uric acid as a by-product of the breakdown of proteins is the:

• A) Stomach
• B) Liver
• C) Kidney
• D) Small intestine

The organelle that contains genetic materials is called ________.

• A) Mitochondria
• B) Cytoplasm
• C) Ribosomes
• D) Nucleus

________ Bond is form by the complete transform of electrons

• A) ovalent
• B) co-ordinate covalent
• C) Ionic
• D) all of these

Lakes to freeze from the top down due to:

• A) The confinement properties of the boundaries of the lake
• B) The quantity of salt in water
• C) The high specific heat of water
• D) The anomalous behavior of the expansion of water between 0° C and 4° C

a person sitting in his office reading a lengthy report comprising 800 pages is according to physics definition of work is:

• A) doing work
• B) losing energy
• C) not doing work
• D) gaining energy

The ring shape unsaturated hydrocarbons are known as________.

• A) Acyclic compounds
• B) Aliphatic compounds
• C) Isomers compounds
• D) Aromatic compounds

The elements of group 18 are called____

• A) Nobel gases
• B) Transition elements
• C) Typical elements
• D) Normal elements

One degree of Celsius is equal to?

• A) 2.12 degrees of Fahrenheit scale
• B) One degree of Fahrenheit scale
• C) 1.8 degrees of Fahrenheit scale
• D) 3.2 degrees of Fahrenheit scale