C
CraftExam

CBSE Class 8 Science Sample Paper

Marks:
40
Time:
1½ Hours
Questions:
20
Chapters:
13
Session:
2026-27
Class_8_Science_Sample_Paper_CraftExam.pdfA4 · Set A

Academic Session 2026-27

SAMPLE PAPER

SCIENCE

Class VIII

Time Allowed1½ HoursMaximum Marks40SetA

Assessment: CBSE-Aligned School Assessment

Marks Distribution

SectionQuestion TypeMarks
AMCQs (10×1)10
BShort Answer (4×2)8
CShort Answer (3×3)9
DLong Answer (2×5)10
ECase Study (3×1)3

General Instructions

  1. 1.This question paper has 5 sections.
  2. 2.Marks are shown beside each question.
  3. 3.Read each section instruction carefully.
  4. 4.Attempt only one alternative where internal choice is given.

SECTION A — Objective Type Questions (1×10=10)

Q1 to Q10 are Multiple Choice Questions. Choose the correct option.

Q1. What supplies much of a tropical cyclone's heat and moisture?
(1)
  1. (a)The cyclone eye as an unlimited independent fuel supply
  2. (b)Warm ocean water
  3. (c)Dry ground as the only continuing moisture source
  4. (d)Cold dry air with no source of water vapour
Q2. Which change helps milk become curd?
(1)
  1. (a)The starter acting only as a cooling agent
  2. (b)Acid production by suitable bacteria
  3. (c)Yeast trapping gas to inflate the milk
  4. (d)Evaporation removing all liquid from milk
Q3. Which conclusion matches a test on one seed variety for seven days?
(1)
  1. (a)The result predicts every future harvest
  2. (b)Under these conditions this variety showed the measured response
  3. (c)All plants always respond identically
  4. (d)No other condition matters for any seed
Q4. Which mirror gives a wider field of view with diminished erect images?
(1)
  1. (a)Convex mirror
  2. (b)Plane mirror only
  3. (c)Concave mirror in every position
  4. (d)An opaque flat board
Q5. Which is an example of sublimation?
(1)
  1. (a)Water becoming ice
  2. (b)Steam condensing to droplets
  3. (c)Camphor changing directly from solid to vapour
  4. (d)Ice becoming liquid water
Q6. Which is a symptom experienced by a person?
(1)
  1. (a)Feeling nauseated
  2. (b)A recorded thermometer reading
  3. (c)A measured pulse rate
  4. (d)A laboratory count
Q7. What is pollination?
(1)
  1. (a)Formation of all soil nutrients
  2. (b)An egg hatching
  3. (c)Transfer of pollen to a stigma
  4. (d)Fusion of gametes itself
Q8. Which statement about ecosystem energy is correct?
(1)
  1. (a)Energy cycles endlessly without loss
  2. (b)Decomposers create sunlight
  3. (c)Consumers need no energy
  4. (d)Energy transfers through feeding and is dissipated as heat
Q9. What does stirring mainly change in a typical dissolving comparison?
(1)
  1. (a)The saturation limit must rise every time a spoon moves
  2. (b)The solvent becomes a different chemical compound
  3. (c)The amount dissolved can exceed any limit at fixed conditions
  4. (d)How quickly solute dissolves
Q10. A freely floating object is at rest. How do upthrust and weight compare?
(1)
  1. (a)Weight must be twice upthrust
  2. (b)They balance
  3. (c)Upthrust is zero
  4. (d)Weight is zero

SECTION B — Short Answer Questions (2×4=8)

Q11 to Q14 are Short Answer Questions.

Q11. Why is a compound not simply its elements placed side by side?
(2)
Q12. Distinguish a lunar year from a solar year by the cycles used.
(2)
Q13. Can a coil without an iron core have a magnetic effect? Explain.
(2)
Q14. Distinguish the nucleus of Amoeba from the nucleoid of a bacterium.
(2)

SECTION C — Short Answer Questions (3×3=9)

Q15 to Q17 are Short Answer Questions.

Q15. Plan three controls for comparing how quickly equal sugar portions dissolve at two water temperatures.
(3)
Q16. Describe three useful entries in a Moon-observation diary.
(3)
Q17. Why is calling a predator 'bad for nature' an inadequate scientific explanation?
(3)

SECTION D — Long Answer Questions (5×2=10)

Q18 to Q19 are Long Answer Questions.

Q18. Compare pressures from a 60 N block resting on 0.03 and 0.02 square metres.
(5)
Q19. Design a comparison of two sugar solutions' relative concentration using stated quantities.
(5)

OR

Q19. Explain five distinctions between an operating electromagnet and an unpowered coil of wire.
(5)

SECTION E — Case-Based Questions (1×3=3)

Q20 is a case-based question. Read the case carefully and answer the sub-questions.

Q20

A block pulled over surface A needs 4 N to maintain steady sliding. Over B it needs 7 N under the same load. After suitable lubrication of B, the needed pull falls to 3 N. All pulls are horizontal.
(i) Which unlubricated surface offered greater opposing friction in this test?
(1)
(ii) What effect did lubrication have on the measured resistance of B?
(1)
(iii) Why must the load be kept the same in this surface comparison?
(1)

End of Question Paper