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CBSE
Class 8
Science
Curiosity
Nature of Matter: Elements, Co...
Question Bank

Question Bank - Nature of Matt...

Practice Hub

Question Bank: Nature of Matter: Elements, Compounds, and Mixtures

Structured practice

Question Bank - Nature of Matter: Elements, Compounds, and Mixtures

Q1.

What is a mixture?

Single Answer MCQ
Q-00137385
View explanation
Q2.

Which of the following is an example of a uniform mixture?

Single Answer MCQ
Q-00137387
View explanation
Q3.

What do you call the individual substances that make up a mixture?

Single Answer MCQ
Q-00137389
View explanation
Q4.

Which of the following is a characteristic of non-uniform mixtures?

Single Answer MCQ
Q-00137391
View explanation
Q5.

Which of the following mixtures is an example of an alloy?

Single Answer MCQ
Q-00137393
View explanation
Q6.

What process can separate components of a heterogeneous mixture?

Single Answer MCQ
Q-00137395
View explanation
Q7.

Why do substances in a mixture retain their properties?

Single Answer MCQ
Q-00137397
View explanation
Q8.

What type of mixture is sugar and water?

Single Answer MCQ
Q-00137399
View explanation
Q9.

Which of the following best describes a suspension?

Single Answer MCQ
Q-00137401
View explanation
Q10.

What happens to the visibility of sugar in a saturated solution?

Single Answer MCQ
Q-00137403
View explanation
Q11.

Which of these mixtures is not uniform?

Single Answer MCQ
Q-00137405
View explanation
Q12.

How does the process of making an alloy differ from mixing substances?

Single Answer MCQ
Q-00137407
View explanation
Q13.

What type of mixture would 'air' be classified as?

Single Answer MCQ
Q-00137409
View explanation
Q14.

When components of a mixture react chemically, what do they form?

Single Answer MCQ
Q-00137411
View explanation
Q15.

Which of the following is an example of a pure substance?

Single Answer MCQ
Q-00137414
View explanation
Q16.

What best describes a mixture?

Single Answer MCQ
Q-00137415
View explanation
Q17.

Which of the following is a characteristic of a pure substance?

Single Answer MCQ
Q-00137416
View explanation
Q18.

Which of the following is NOT a pure substance?

Single Answer MCQ
Q-00137417
View explanation
Q19.

Why is milk classified as a mixture?

Single Answer MCQ
Q-00137418
View explanation
Q20.

Which component of air is a pure substance?

Single Answer MCQ
Q-00137419
View explanation
Q21.

What is an example of a homogeneous mixture?

Single Answer MCQ
Q-00137420
View explanation
Q22.

Which of the following mixtures shows the properties of its components?

Single Answer MCQ
Q-00137421
View explanation
Q23.

Why is sugar water not a pure substance?

Single Answer MCQ
Q-00137422
View explanation
Q24.

Which process can separate components of a mixture?

Single Answer MCQ
Q-00137423
View explanation
Q25.

Which of these represents an alloy?

Single Answer MCQ
Q-00137424
View explanation
Q26.

What is the primary property of pure substances?

Single Answer MCQ
Q-00137425
View explanation
Q27.

What is the process of obtaining pure substances from mixtures called?

Single Answer MCQ
Q-00137426
View explanation
Q28.

What type of mixture is formed when sand is mixed with water?

Single Answer MCQ
Q-00137427
View explanation
Q29.

Which property is true for both elements and compounds?

Single Answer MCQ
Q-00137428
View explanation
Q30.

Which of the following is considered a pure substance?

Single Answer MCQ
Q-00137429
View explanation
Q31.

Which of the following substances can be classified solely as a pure substance?

Single Answer MCQ
Q-00137430
View explanation
Q32.

What is a characteristic of a pure substance?

Single Answer MCQ
Q-00137431
View explanation
Q33.

A true statement about pure substances is that they:

Single Answer MCQ
Q-00137432
View explanation
Q34.

Which of the following examples represents a mixture?

Single Answer MCQ
Q-00137433
View explanation
Q35.

Why are alloys classified as mixtures?

Single Answer MCQ
Q-00137434
View explanation
Q36.

What happens to the properties of substances in a mixture?

Single Answer MCQ
Q-00137435
View explanation
Q37.

Which of the following best defines a pure substance?

Single Answer MCQ
Q-00137436
View explanation
Q38.

How can you change a pure substance into a mixture?

Single Answer MCQ
Q-00137437
View explanation
Q39.

Which of the following is a property of a pure substance when dissolved?

Single Answer MCQ
Q-00137438
View explanation
Q40.

Which of the following substances is a mixture?

Single Answer MCQ
Q-00137439
View explanation
Q41.

Why can't water be classified as a mixture?

Single Answer MCQ
Q-00137440
View explanation
Q42.

Calcium carbonate forms from which reaction?

Single Answer MCQ
Q-00137441
View explanation
Q43.

What distinguishes dust particles in air from other particles?

Single Answer MCQ
Q-00137442
View explanation
Q44.

The term 'pure substance' implies what about its composition?

Single Answer MCQ
Q-00137443
View explanation
Q45.

If you mix sand and salt, which statement is true?

Single Answer MCQ
Q-00137444
View explanation
Q46.

In which scenario does a substance remain pure?

Single Answer MCQ
Q-00137445
View explanation
Q47.

What are minerals primarily classified as?

Single Answer MCQ
Q-00137475
View explanation
Q48.

Which of the following is NOT a characteristic of minerals?

Single Answer MCQ
Q-00137476
View explanation
Q49.

Which of the following is an example of a mineral?

Single Answer MCQ
Q-00137477
View explanation
Q50.

What determines the specific properties of a mineral?

Single Answer MCQ
Q-00137478
View explanation
Q51.

Which mineral type is characterized by being formed through cooling and solidification of magma?

Single Answer MCQ
Q-00137479
View explanation
Q52.

What is the term for minerals that are composed of two or more elements?

Single Answer MCQ
Q-00137480
View explanation
Q53.

Why are some minerals considered 'ore minerals'?

Single Answer MCQ
Q-00137481
View explanation
Q54.

Which of the following is true about the relationship between minerals and rocks?

Single Answer MCQ
Q-00137482
View explanation
Q55.

Which process leads to the formation of sedimentary minerals?

Single Answer MCQ
Q-00137483
View explanation
Q56.

Which statement about the hardness of minerals is accurate?

Single Answer MCQ
Q-00137484
View explanation
Q57.

What term describes the process where minerals change form due to heat and pressure?

Single Answer MCQ
Q-00137485
View explanation
Q58.

Which mineral is known for its ability to conduct electricity?

Single Answer MCQ
Q-00137486
View explanation
Q59.

Which mineral is commonly used in the manufacture of glass?

Single Answer MCQ
Q-00137487
View explanation
Q60.

What role do minerals play in biological systems?

Single Answer MCQ
Q-00137488
View explanation
Q61.

What is a mixture?

Single Answer MCQ
Q-00137503
View explanation
Q62.

Which of the following is an example of a uniform mixture?

Single Answer MCQ
Q-00137504
View explanation
Q63.

What distinguishes a non-uniform mixture from a uniform mixture?

Single Answer MCQ
Q-00137505
View explanation
Q64.

Which item is an example of a non-uniform mixture?

Single Answer MCQ
Q-00137506
View explanation
Q65.

In a mixture, what happens to the individual components?

Single Answer MCQ
Q-00137507
View explanation
Q66.

What term is used to describe a mixture of metals like bronze or brass?

Single Answer MCQ
Q-00137508
View explanation
Q67.

Which statement is true about solutions?

Single Answer MCQ
Q-00137509
View explanation
Q68.

Which of the following best describes a ‘suspension’?

Single Answer MCQ
Q-00137510
View explanation
Q69.

What happens when salt dissolves in water?

Single Answer MCQ
Q-00137512
View explanation
Q70.

Which of the following is NOT true about mixtures?

Single Answer MCQ
Q-00137514
View explanation
Q71.

Which mixture cannot be separated by filtration?

Single Answer MCQ
Q-00137516
View explanation
Q72.

What is the primary difference between a compound and a mixture?

Single Answer MCQ
Q-00137518
View explanation
Q73.

What occurs if a heterogeneous mixture is allowed to sit?

Single Answer MCQ
Q-00137520
View explanation
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