Physics Quiz: Motion and Speed

Motion

• A body is said to be in uniform motion if it moves with a constant speed in a straight line.
• The slope of a distance-time graph represents speed.
• An example of non-uniform motion is a ball dropped from a height.
• The SI unit of acceleration is m/s².
• The average speed of a car can be calculated by dividing the total distance traveled by the total time taken.

Chemistry: Matter in Our Surroundings

• Particles of matter have spaces between them.
• Plasma is not a state of matter.
• Sublimation is the process of changing a solid directly into gas without passing through the liquid state.
• The boiling point of water is 100°C.
• Air is an example of a mixture.

Biology: The Fundamental Unit of Life

• The smallest unit of life is the cell.
• The control center of the cell is the nucleus.
• Prokaryotic cells lack a nucleus.
• Mitochondria are known as the powerhouse of the cell.
• Cell walls are found only in plant cells.
• The jelly-like substance inside the cell is called cytoplasm.
• Eukaryotic cells have a defined nucleus.
• Ribosomes are responsible for protein synthesis.
• The cell membrane is semi-permeable.
• Chloroplasts are found in plant cells.

Mathematics: Number System and Polynomials

• √2 is an irrational number.
• The decimal representation of 1/3 is 0.333...
• The value of x² - 3x + 2 when x = 1 is 0.
• The sum of the roots of the polynomial x² - 5x + 6 is 5.
• The product of the roots of the polynomial x² + 3x - 4 is -4.
• 11 is a prime number.
• The HCF of 18 and 24 is 6.
• If x + 2 is a factor of x² + kx + 6, then the value of k is 3.
• The degree of the polynomial 5x³ - 4x² + 3x - 2 is 3.
• x² - 4 is a polynomial.

MAT

• If 5 men can complete a work in 20 days, 10 men will take 10 days to complete the same work.
• In a certain code language, if CAT is written as 3120, then DOG will be written as 4127.
• If a train travels 60 km in 1 hour and 30 minutes, its average speed is 40 km/h.
• If a man walks 30 meters north and then 40 meters east, he is 50 meters from the starting point.
• The sum of the first 10 prime numbers is 129.
• The letters of the word "LEADER" can be arranged in 1440 ways.
• A number can be formed by arranging the digits 1, 2, 3, 4 without repetition in 24 ways.
• A committee of 3 can be selected from 5 persons in 10 ways.
• In a race of 100 meters, if A gives B a start of 10 meters, B gives C a start of 5 meters, and C gives D a start of 3 meters, A will win the race.
• The 10th term of an arithmetic series with the first term as 2 and the common difference as 3 is 27.
• If 1 is added to the square of a number, the result is 41, then the number is 6.
• If the price of an article is reduced by 20%, the new price is 40% of the original price.