Class - 9
Easy (1-10)
1. *Which of the following is a compound?*
A) Oxygen B) Water C) Nitrogen D) Iron
2. *Cell wall is made up of:*
A) Cellulose B) Protein C) Lipid D) DNA
3. *Which tissue is responsible for flexibility in plants?*
A) Parenchyma B) Collenchyma C) Sclerenchyma D) Xylem
4. *Momentum is the product of:*
A) Mass × Velocity B) Mass × Acceleration
C) Force × Time D) Work × Time
5. *Which of the following is NOT a mixture?*
A) Air B) Salt water C) Sugar D) Brass
6. *Sound cannot travel through:*
A) Solid B) Liquid C) Gas D) Vacuum
7. *Which organelle contains its own DNA?*
A) Ribosome B) Lysosome C) Mitochondria D) Golgi
8. *Which of the following is a physical change?*
A) Burning wood B) Melting ice C) Rusting iron D) Digestion
9. *The formula for kinetic energy is:*
A) 1/2 mv2 B) mv. C) u2 +2as D) ma
10. *Which gas is most abundant in the atmosphere?*
A) Oxygen B) Nitrogen C) Carbon dioxide D) Argon
Moderate (11-20)
11. *Which of the following statements i. s true for isotopes?*
A) Same atomic number, different mass number
B) Same mass number, different atomic number
C) Same number of neutrons, different protons
D) None of these
12. *In which part of the cell does respiration occur?*
A) Nucleus B) Cytoplasm C) Mitochondria D) Ribosome
13. *Which force is needed to keep an object moving in a circular path?*
A) Gravitational force B) Centripetal force
C) Frictional force D) Magnetic force
14. *Which of the following is a characteristic of meristematic tissue?*
A) Large vacuoles B) Thick cell walls
C) Actively dividing cells D) Dead cells
15. *The universal law of gravitation states that force is:*
A) Directly proportional to distance
B) Inversely proportional to distance squared
C) Independent of masses
D) None of the above
16. *Which of the following diseases is caused by deficiency of Vitamin C?*
A) Rickets B) Scurvy C) Beri-beri D) Pellagra
17. *What is the SI unit of power?*
A) Joule B) Watt C) Newton D) Pascal
18. *Which of the following is a vector quantity?*
A) Speed B) Distance C) Velocity D) Mass
19. *In the equation E = mc2 , what does ‘c’ represent?*
A) Speed of light B) Speed of sound
C) Centripetal acceleration D) None
20. *Which of the following is an example of a non-contact force?*
A) Friction B) Tension C) Magnetic force D) Normal force
Tough (21-30)
21. *Which of the following postulates of Dalton’s atomic theory was later disproved?*
A) Atoms are indivisible
B) Atoms of same element are identical
C) Compounds form by combination of atoms
D) Both A and B
22. *The relative atomic mass of chlorine is 35.5. This indicates:*
A) Chlorine has two isotopes of mass 35 and 37 in equal proportion
B) Chlorine has isotopes 35 (75%) and 37 (25%)
C) Chlorine has isotopes 34 and 36
D) None of the above
23. *Which of the following is true for an object in uniform circular motion?*
A) Velocity is constant B) Acceleration is zero
C) Speed changes D) Direction of velocity changes continuously
24. *Which scientist proposed the five kingdom classification?*
A) Linnaeus B) Whittaker C) Woese D) Darwin
25. *What is the value of acceleration due to gravity at the center of the Earth?*
A) 9.8 m/s² B) 0 m/s² C) 4.9 m/s² D) Infinite
26. *In a food chain, if the producer has 10,000 J of energy, how much energy will be transferred to the secondary consumer?*
A) 100 J B) 10 J C) 1000 J D) 1 J
27. *Which of the following is a correct balanced chemical equation?*
A) H2 + Cl2 -------------> HCl
B) H2 + Br2--------------> HBr
C) Mg + O2----------------> MgO
D) C+ O2 ------------------> CO2
28. *Which of the following is NOT a greenhouse gas?*
A) CO₂ B) CH₄ C) N₂O D) O₂
29. *The phenomenon of scattering of light by colloidal particles is called:*
A) Tyndall effect B) Raman effect
C) Photoelectric effect D) None
30. *Which of the following is a limitation of Mendeleev’s periodic table?*
A) Position of isotopes was not justified
B) Hydrogen’s position was ambiguous
C) Both A and B
D) None