Compulsory Science and Technology Question Paper 2082 SP (Old Question)

Which of the following uses an analogue signal?

i. Infrared thermometer

ii. Computer

iii. Smart watch

iv. Short wave radio receiver

The following table shows the four groups of animals. To which group does fish belong?

i. W

ii. X

iii. Y

iv. Z

Which of the following statements is correct?

i. Value of acceleration due to gravity decreases when we go higher from the surface of the earth.

ii. Value of acceleration due to gravity decreases when the height increases from the surface of the earth.

iii. Value of acceleration due to gravity is less at the polar regions than the equatorial region of the earth.

iv. Value of acceleration due to gravity is the most at the highest peak of the earth.

In the given figure, what is the weight of an object in liquid?

i. 5 N

ii. 25 N

iii. 30 N

iv. 35 N

Study the given diagram and identify p and q.

i. p: angle of refraction and q: critical angle

ii. p: critical angle and q: angle of reflection

iii. p: angle of incidence and q: angle of refraction

iv. p: critical angle and q: angle of refraction

According to the Aufbau's principle, which of the following sequences is correct?

i. 2s2p 3p 4s

ii. 2p 3s3p 4s

iii. 2p 3s 4s 3p

iv. 1s 2p2s 3s

Which of the following equations is correct for the chemical reaction while burning magnesium with nitrogen?

i.

ii.

iii.

iv.

Which of the following is the main ore of iron?

i. Argentite

ii. Chalcopyrite

iii. Siderite

iv. Haematite

Study the following statement and arguments about soap.

Statement: Soap is environment friendly.

Argument 1: Soap is biodegradable, hence does not pollute environment.

Argument 2: Soap gives scum in hard water and makes clothes and utensils clean.

i. Statement and argument 1 are wrong but argument 2 is correct.

ii. Statement and argument 2 are correct but argument 1 is wrong.

iii. Statement and argument 2 are wrong but argument 1 is correct.

iv. Statement and argument 1 are correct but argument 2 is wrong.

Choose the correct conclusion based on the given fact and statements.

Fact: Climate change refers to long-term variations in temperature and precipitation patterns.

Statement 1: This can lead to rising sea levels due to melting of ice.

Statement 2: It makes the earth move farther away from the sun every year.

i. Fact and both statements are correct.

ii. Fact is incorrect but both the statements are correct.

iii. Fact and statement 1 are correct but statement 2 is incorrect.

iv. Fact and statement 2 are correct but statement 1 is incorrect.

Why is the controlled variable kept unchanged in a scientific experiment?

Bat and whale have many dissimilarities, yet they are kept in the same class, why?

What is the weight of the body on the moon's surface if its weight is 150 N on the earth's surface?

Define free fall.

State the law of pressure that can be verified by the given figure.

Draw a graph to show the relationship between alternating current and time.

In which group of modern periodic table does the element having electronic configuration 1s² 2s² 2p⁶ 3s² lie?

Why is magnetic separation used in metallurgy?