Student Questions

Which of the following is a diatomic molecule? (a) Oxygen (O2) (b) Helium (He) (c) Phosphorus (P4) (d) Sulphur (S8)

Which of the following is the correct pair of an atom and its symbol? (a) Sulphur – Su (b) Potassium – P (c) Phosphorus – P (d) Sodium – S

A mixture of sulphur and carbon disulphide is: A) Heterogeneous and shows Tyndall effect B) Homogeneous and shows Tyndall effect C) Heterogeneous and does not show Tyndall effect D) Homogeneous and does not show Tyndall effect

The process to separate cream from milk is: A) Filtration B) Decantation C) Centrifugation D) Sublimation

Which of the following is a pure substance? A) Milk B) Air C) Iron D) Salad

The area of a right triangle is 30 cm^2. If the base is 5 cm, then the hypotenuse must be: (a) 12 cm (b) 18 cm (c) 13 cm (d) 20 cm

The median of a triangle divides it into two: a. Triangles of equal area b. Congruent triangles c. Isosceles triangles d. Right-angled triangles

If a triangle and a parallelogram are on the same base and between the same parallels, what is the ratio of their areas? a. 1:1 b. 1:2 c. 2:1 d. 1:3

If two parallel lines are cut by a transversal, then the pairs of interior angles on the same side of the transversal are: a) Equal b) Supplementary c) Complementary d) Adjacent

If two lines intersect each other, then the vertically opposite angles are: a) Equal b) Unequal c) Complementary d) Supplementary

Which of the following is true? A) Every natural number is a whole number. B) Every whole number is a natural number. C) Every integer is a rational number. D) Both A and C.

The decimal representation of a rational number is: A) Always terminating B) Either terminating or repeating C) Neither terminating nor repeating D) Non-repeating

A man buys apples at 3 for a rupee and sells them at 2 for a rupee. Find his gain percent. A) 30% B) 40% C) 50% D) 60%

The simple interest on Rs. 5000 at 8% p.a. for 3 years is? A) Rs. 1000 B) Rs. 1200 C) Rs. 1500 D) Rs. 1400

If 3 : x :: 9 : 15, find x. A) 5 B) 10 C) 15 D) 20

A car covers 360 km in 6 hours. What is its speed? A) 50 km/h B) 60 km/h C) 70 km/h D) 80 km/h

A trader marks goods 25% above cost price and gives 10% discount. Find the profit percentage. A) 10% B) 12.5% C) 15% D) 20%

The price of an article increases by 20% and then decreases by 20%. What is the net percentage change? A) 0% B) 4% decrease C) 4% increase D) 2% decrease

A "Device Driver" is a tiny piece of software. If you plug in a brand-new printer but it won't print, why might the "Driver" be the problem? A) The driver is the person who delivered the printer. B) The printer is out of paper. C) The driver is the "translator" that tells the computer hardware exactly how to talk to that specific printer. D) Drivers are only for toy cars.

What is the probability of an impossible event? a. 1 b. 0 c. More than 1 d. Less than 1