Semester-1 Review

Front

What does the conservation of mass state in a chemical reaction?

Back

The mass of the reactants equals the mass of the products.

Front

What is the formula to calculate acceleration?

Back

Acceleration = Net Force / Mass.

Front

If a net force of 50 N is applied to a 10 kg object, what is its acceleration?

Back

5 m/s².

Front

What element is represented by the symbol 'O' on the periodic table?

Back

Oxygen.

Front

In a chemical reaction, how is the mass of the reactants related to the mass of the products?

Back

The mass of the reactants equals the mass of the products.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs sunlight, which is essential for the photosynthesis process.

Front

What is Newton's second law of motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N).

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as Weight = Mass x Gravity.