The most abundant compound of oxygen in earth's crust is ______.

• A) H2O
• B) SiO2
• C) H2SO4
• D) Fe2O3

Force is defined as the rate of change of:

• A) mass
• B) velocity
• C) momentum
• D) acceleration

A car travelling at 90km/hr on highway overtaking a bus with 120km/hr speed. What is relative velocity of car with respect to passenger sitting in bus?

• A) 210 meters
• B) 90km/hr
• C) 30 km/hr
• D) 120 km/hr

If we push the ground in the backwards direction and the ground exerts a force in the forward direction enabling us to walk. This process is described by which law

• A) the Force and acceleration law
• B) law of action and reaction
• C) law of conservation of momentum
• D) law of Inertia

Plants collect energy from the sun and use ______and water to produce sugars.

• A) Carbon Dioxide
• B) Hydrogen
• C) Nitrogen
• D) Oxygen

Magnification (positive) greater than unity point toward:

• A) Neither real nor virtual image
• B) Distorted image
• C) Virtual image
• D) Real image

If two quantities are directly proportional to each other then the graph between them is a:

• A) straight line
• B) none of the above
• C) circle
• D) arc

The primary aluminum ore extensively employed in metallurgical processes is known as _________.

• A) Chromite
• B) Magnetite
• C) Hematite
• D) Bauxite

What is the pH value of 0.001 molar HCl solution?

• A) 4
• B) 3
• C) 2
• D) 1

What is the mass percent concentration of a solution made up of 12 grams of sugar and 300 grams of water?

• A) 5.6%
• B) 3.8%
• C) 2.7%
• D) 4.3%

The energy stored in a hydroelectric Dam is:

• A) Kinetic Energy
• B) Potential Energy
• C) Chemical Energy
• D) Thermal Energy

Due to which property metals are used in making of musical instruments like sitar and violin?

• A) Conductivity
• B) Ductility
• C) Malleability
• D) Sonorousness

Why is oxygen important to blood and to the cells?

• A) Oxygen is necessary for cell growth and energy
• B) Oxygen helps the blood to clot
• C) Oxygen brings food to the cells
• D) Carbon dioxide is the most important substance to the body

If the velocity of an object is increasing its acceleration has to be

• A) positive
• B) negative
• C) variable
• D) uniform

Protein making machine of a cell is known as ________.

• A) Endoplasmic Reticulum
• B) Mitochondria
• C) Nucleus
• D) Ribosomes

According to the sign convention, the distance of object...... from mirror/lens:

• A) Is equal to object height
• B) Is always positive
• C) May be positive or negative
• D) Is always negative

A vector can have (i) magnitude (ii) unit and (iii) direction. If such a vector is multiplied by a negative number greater than one which quantity or quantities change:

• A) (i) only
• B) (i) and (iii)
• C) (ii) and (iii)
• D) (i) and (ii)

The process of heating ore with carbon in the absence of air is referred to as:

• A) Smelting
• B) Reduction
• C) Roasting
• D) Refining

Which one in blood helps in exchange of Oxygen against contraction?

• A) Plasma
• B) Hemoglobin
• C) Salts
• D) White blood cells

The amount of work done by a Force of 5 N pulling a mass of 5 kg, 5m along a rough floor in the direction of the applied force is

• A) 25 J
• B) 50 J
• C) 5 J
• D) 125 J