Mitochondria are called powerhouse of a cell because ________.

• A) They present in cytoplasm in large number
• B) They are self replicating organelle
• C) They make ATP (Adenosine Tri Phosphate) for cell
• D) They have a double membrane

Each distinct form of life or type of organism is called __________

• A) Species
• B) Domain
• C) System
• D) Cell

The study of life or living organisms is called_________

• A) Chemistry
• B) Psychology
• C) Physics
• D) Biology

The temperature of sand raised more quickly as compared to water as specific heat of sand is_______.

• A) Equal to water
• B) Greater than water
• C) Neutral
• D) Less than water

A mass is projected vertically upwards. Which line could represents the correct energy conversions while the mass is gaining height.
K.E. Gravitational P.E. Total Energy

• A) increases increases increases
• B) decreases increases does not change
• C) decreases decreases decreases
• D) increases decreases does not change

A person suffering from long-sighted cannot see objects nearer to his eye than 50 cm. He wants to read a book 25 cm away; he should use spectacle lenses whose power in dioptres is ----------.

• A) -6
• B) -4
• C) -2
• D) +4

Stars are mostly composed of_______________

• A) Nitrogen
• B) Oxygen
• C) Ozone
• D) Hydrogen

Which of the following is a scalar quantity:

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

To get a real and inverted image of the same size using a convex lens where should an object be placed?

• A) At 2F
• B) At infinity
• C) At F
• D) Between O and F

Flowers have male and female parts called …… and ……….

• A) carpel stamen
• B) pollination carpel
• C) staman pollination
• D) stamen carpel

When a compressed spring is released horizontally against a free-to-move mass, one form of energy changes into another. Which line represents the correct energy conversions:
Kinetic Energy Elastic P.E. Total Energy

• A) increases increases does not change
• B) decreases decreases decreases
• C) increases decreases does not change
• D) does not change increases increases

The most powerful oxidizing agent among the halogen is______.

• A) I2
• B) F2
• C) Br2
• D) Cl2

Work done depends upon (i) force (ii) distance moved (iii) angle between direction of force and displacement. Which line is correct if work done is not zero:
Force angle displacement

• A) greater than zero degrees greater than zero zero
• B) zero zero degrees zero
• C) greater than 90 degrees greater than zero zero
• D) zero 90 degrees zero

The melting point of Caustic soda is _________ degree centigrade

• A) 95
• B) 100
• C) 318
• D) 801

A car with uniform speed can have the acceleration only when the motion of car is in_____ .

• A) Parabolic path
• B) Straight line
• C) Circular path
• D) Irregular path

In mitosis the S phase checkpoint ensures that ________.

• A) Cell is ready for division
• B) Everything is ready to enter the M phase
• C) Synthesis of DNA is correctly done or not
• D) DNA is ready for synthesis

Inverse of focal length is known as the ______ of a lens:

• A) Power of accommodation
• B) Far point
• C) Focus
• D) Power

Elements with seven electronic is their outer most shell form________

• A) Negative ion
• B) Both Positive and Negative ion
• C) remain neutral
• D) Positive ion

The rate of reaction of organic compounds is very slow due to ________.

• A) Ionic bonding
• B) Covalent bonding
• C) Metallic bonding
• D) Coordinate covalent bonding

When a person uses a convex lens as a simple magnifying glass, the object must be placed at a distance:

• A) Less than one focal length
• B) Less than twice the focal length
• C) More than twice the focal length
• D) More than one focal length