Author: Mauvin Sequeira

1. What is John Dalton best known for proposing?
(a) The theory of relativity
(b) The law of gravity
(c) The atomic theory
(d) The periodic table

2. Dalton’s atomic theory helped to explain the law of definite proportions. What does this law state?
(a) The mass of reactants equals the mass of products in a chemical reaction.
(b) A compound always contains the same elements in the same proportions by mass.
(c) The volume of a gas is directly proportional to its temperature.
(d) The pressure of a gas is inversely proportional to its volume.

3. What was John Dalton’s primary profession before becoming a scientist?
(a) Teacher
(b) Doctor
(c) Engineer
(d) Lawyer

1. Heinrich Hertz was a renowned physicist from:
(a) France
(b) Germany
(c) Italy
(d) England

2. Hertz is best known for his discovery of:
(a) Gravity
(b) Electricity
(c) Radio waves
(d) X-rays

3. The unit of frequency is named after:
(a) Albert Einstein
(b) Isaac Newton
(c) Heinrich Hertz
(d) James Maxwell

1. What is the largest bone in the human body?
(a) Femur
(b) Tibia
(c) Humerus
(d) Sternum

2. How many bones are in the human skull?
(a) 22
(b) 28
(c) 32
(d) 36

3. What type of joint is found between the femur and tibia?
(a) Hinge joint
(b) Ball-and-socket joint
(c) Pivot joint
(d) Gliding joint

1. What is the primary cause of global warming?
(a) Deforestation
(b) Increased volcanic activity
(c) The natural Earth cycle
(d) Increased greenhouse gas emissions

2. Which of the following is a renewable energy source?
(a) Coal
(b) Natural gas
(c) Solar power
(d) Nuclear power

3. Which layer of the atmosphere contains the ozone layer?
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Thermosphere

1. What is the largest planet in our solar system?
(a) Earth
(b) Jupiter
(c) Saturn
(d) Neptune

2. Which planet is known as the Red Planet?
(a) Mars
(b) Venus
(c) Mercury
(d) Jupiter

3. What is the closest star to Earth?
(a) Sirius
(b) Betelgeuse
(c) The Sun
(d) Proxima Centauri

1. Which of the following is a pure substance?
(a) Air
(b) Salt water
(c) Iron
(d) Sugar solution

2.The smallest particle of an element that can exist independently is called:
(a) Molecule
(b) Atom
(c) Ion
(d) Electron

3. The process of converting a solid directly into a gas is called:
(a) Sublimation
(b) Evaporation
(c) Condensation
(d) Melting

1. Which of the following is a scalar quantity?
(a) Velocity
(b) Acceleration
(c) Force
(d) Speed

2. Newton’s second law of motion is expressed as:
(a) F = m/a
(b) F = ma
(c) F = a/m
(d) F = m – a

3. The unit of work is:
(a) Joule
(b) Newton
(c) Watt
(d) Kilogram

1. The basic unit of life is:
(a) Cell
(b) Tissue
(c) Organ
(d) Organ system

2. The process by which plants convert sunlight into energy is called:
(a) Respiration
(b) Photosynthesis
(c) Digestion
(d) Excretion

3. The control center of a cell is the:
(a) Cell membrane
(b) Cytoplasm
(c) Nucleus
(d) Mitochondria