Best Brain March 2026 Science

Best Brain March 2026 Science - Paper 1 - Objective Instructions

Answer all the questions. Each question is followed by four options lettered A to D. Find out the correct option for each question and shade in pencil on your answer sheet the space which bears the same letter as the option you have chosen. Give only one answer to each question.

Question 1

In the water cycle precipitation refers to

Question 2

Which planet is known as Earth's twin due to its similar size and composition?

Question 3

The primary diet of housefly larvae is

Question 4

The role of minerals in animal feed is to

Question 5

Which type of climate is typically found at high altitudes?

Question 6

The layer of the sun that we can see is the

Question 7

The process that powers the sun is called

Question 8

Which inner planet has no atmosphere?

Question 9

Which of the following best describes biodiversity?

Question 10

The planet Mercury: I. is largest planet in our solar system. II. is the closest planet to the Sun. III. has no moons or rings. IV. is covered in a layer of dust.

Question 11

Which color of light has the longest wavelength?

Question 12

Which digestive organ produces insulin?

Question 13

The mechanical advantage of a pulley system is determined by the

Question 14

Sodium hydroxide is a key ingredient in soap making because it

Question 15

Kinetic energy depends on

Question 16

When groundnut paste is mixed with water the mixture formed is

Question 17

Sound energy travels fastest through

Question 18

A major reservoir of carbon in the carbon cycle is

Question 19

In a closed system the total amount of energy

Question 20

Which breed of cattle is primarily raised for milk production?

Question 21

The most vital nutrient in poultry feed is

Question 22

The primary consideration when selecting feed for a dairy cow is

Question 23

Which of the following is a form of potential energy?

Question 24

A wedge is used to

Question 25

Which of the following actions can help reduce your carbon footprint?

Question 26

The fish species which is widely farmed in freshwater aquaculture is

Question 27

Which part of the ear is responsible for converting sound vibrations into neural signals?

Question 28

The unit of measurement for the loudness of sound is

Question 29

How does elevation affect climate?

Question 30

The sperm cell is a specialized cell that: I. is covered by a cap-like structure. II. has a nucleus that contains genetic material. III. It has a long whip-like tail. IV. is small and streamlined.

Question 31

Which planet has a day longer than its year?

Question 32

When an object is in forward bias in an electronic circuit

Question 33

The pitch of a sound is determined by its

Question 34

According to Newton's Third Law: I. every action has an effect. II. for every effect there is a cause. III. there is no action without a corresponding reaction.

Question 35

One characteristic of a well-prepared seed bed is

Question 36

The nymph of a grasshopper: I. is smaller than the adult. II. do not feed on anything. III. molts several times into adulthood. IV. do not have fully developed wings.

Question 37

If more resistors are added in series in a circuit the total resistance

Question 38

Which of the following human activities is a major threat to biodiversity?

Question 39

High biodiversity typically indicates

Question 40

A common breed of pig known for its rapid growth and good meat quality is

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