NCERT Solution of Class 9 Science MCQ Important Question Answer solution with pdf. Here We Provides Class 1 to 12 all Subjects NCERT Solution with Notes, Question Answer, CBSE and HBSE Important Questions, MCQ and old Question Papers for Students.
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HBSE ( Haryana Board ) Solution of Class 9 Science important MCQ Question And Answer solution of Physics, Chemistry and Biology.
HBSE Class 9 Science Important MCQ Question Answer 2024
HBSE Class 9 Chapter 1 Matter in Our Surroundings MCQ Important Question Answer 2024
1. What is the physical state of water at 100°C ? Most Important
(A) Solid
(B) Liquid
(C) Gas
(D) Both B and C
Answer
Ans – (D) Both B and C
2. Which of the following are matter?
(A) Chair
(B) Almonds
(C) Air
(D) All of the above
Answer
Ans – (D) All of the above
3. The melting point of ice is :
(A) 100°C
(B) 0°C
(C) 27°C
(D) -100°C
Answer
Ans – (B) 0°C
4. S.I. unit of temperature is ;
(A) Pascal
(B) Celsius
(C) Kelvin
(D) Newton
Answer
Ans – (C) Kelvin
5. What will be the physical state of water at 300K ?
(A) Solid
(B) Liquid
(C) Gas
(D) Plasma
Answer
Ans – (B) Liquid
HBSE Class 9 Chapter 2 Is Matter Around Us Pure MCQ Important Question Answer 2024
1. Which of the following will show ‘Tyndall effect’ ?
(A) Salt Solution
(B) Milk
(C) Starch Solution
(D) Soda Water
Answer
Ans – (B) Milk
2. Which of the following will show Tyndall effect?
(A) Salt solution
(B) Milk
(C) Copper Sulphate solution
(D) None of these
Answer
Ans – (B) Milk
3. Which of the following are chemical change ?
(A) Melting of butter in a pan
(B) Boiling of water to form steam
(C) Dissolving common salt in water
(D) Cooking of food
Answer
Ans – (D) Cooking of food
4. Which of the following are chemical changes?
(A) Growth of a plant
(B) Cooking of food
(C) Digestion of food
(D) All of these
Answer
Ans – (D) All of these
5. Which of the following are homogeneous mixture?
(A) Ice
(B) Vinegar
(C) Soda water
(D) All of these
Answer
Ans – (D) All of these
6. The technique to separate butter from curd is:
(A) Evaporation
(B) Centrifugation
(D) Chromatography
(C) Sublimation
Answer
Ans – (B) Centrifugation
7. What is the percentage of Nitrogen gas in our atmosphere ?
(A) 70%
(B) 78%
(C) 50%
(D) 20%
Answer
Ans – (B) 78%
HBSE Class 9 Chapter 3 Atoms and Molecules MCQ Important Questions 2024
1. Chemical formulae of calcium carbonate is :
(A) CaCO3
(B) Ca(OH)2
(C) Cao
(D) CaCl2
Answer
Ans – (A) CaCO3
2. What is the symbol of element Barium?
(A) B
(B) Be
(C) Bm
(D) Ba
Answer
Ans – (D) Ba
3. Atomic mass of Oxygen is
(A) 12
(B) 14
(C) 16
(D) 23
Answer
Ans – (C) 16
4. Example of metal is:
(A) Gold
(B) Silver
(C) Copper
(D) All of the above
Answer
Ans – (D) All of the above
5. Atomic radius is measured in
(A) cm
(B) meter
(C) nanometer
(D) Millimeter
Answer
Ans – (C) nanometer
6. How many atoms are present in H2S molecule?
(A) 1
(B) 2
(C) 3
(D) 4
Answer
Ans – (C) 3
HBSE Class 9 Chapter 4 Structure of the Atom MCQ Important Questions 2024
1. Who discovered neutron ? Most Important
(A) E. Goldstein
(B) J. Chadwick
(C) J.J. Thomson
(D) Rutherford
Answer
Ans – (B) J. Chadwick
2. Rutherford’s alpha-particle scattering experiment was responsible for the discovery of :
(A) Proton
(B) Neutron
(C) Electron
(D) Atomic Nucleus
Answer
Ans – (D) Atomic Nucleus
3. Which one of the following is a correct electronic configuration of chlorine ?
(A) 2, 7, 8
(B) 2, 8, 7
(C) 7, 8, 2
(D) 1, 8, 8
Answer
Ans – (B) 2, 8, 7
4. Which one of the following is a correct electronic configuration of sodium? Most Important
(A) 2, 8
(B) 2, 8, 1
(C) 2,1, 8
(D) 8, 2, 1
Answer
Ans – (B) 2, 8,1
5. The _________ is defined as the sum of the total number of protons and neutrons present in the nucleus of an atom.
(A) Atomic number
(B) Mass number
(C) Isotopes
(D) Isobars
Answer
Ans – (B) Mass number
6. The isotope which is used in the treatment of Cancer is:
(A) Iodine
(B) Cobalt
(C) Chlorine
(D) Boron
Answer
Ans – (B) Cobalt
7. The sub-atomic particles of an atom are:
(A) Protons
(B) Neutrons
(C) Electrons
(D) All of the above
Answer
Ans – (D) All of the above
8. Number of valence-electrons in Cl– are : Most Important
(A) 16
(B) 8
(C) 17
(D) 18
Answer
Ans – (B) 8
9. An atom of each element has a definite combining capacity called its _________.
(A) Valency
(B) Atomic number
(C) Mass number
(D) Isotopes
Answer
Ans – (A) Valency
HBSE Class 9 Chapter 5 The Fundamental Unit of Life MCQ Important Questions 2024
1. Cell membrane is :
(A) Permeable
(B) Impermeable
(C) Selectively permeable
(D) None of these
Answer
Ans – (C) Selectively permeable
2. Where are proteins synthesized inside the cell?
(A) In Mitochondria
(B) In Chromoplast
(C) In Ribosomes
(D) All of these
Answer
Ans – (C) In Ribosomes
3. The fundamental organizational unit of life is :
(A) Chromoplasts
(B) Cell
(C) Leucoplasts
(D) Plasma
Answer
Ans – (B) Cell
4. In which year cell discovered ? Most Important
(A) 1565
(B) 1605
(C) 1600
(D) 1665
Answer
Ans – (D) 1665
5. Who discovered cells?
(A) Robert Hooke
(C) Leeuwenhoek
(B) Robert Brown
(D) T. Schwann
Answer
Ans – (A) Robert Hooke
6. How many chromosomes in Prokaryotic cell ?
(A) 10
(B) 8
(C) 5
(D) 1
Answer
Ans – (D) 1
7. Which cell organelle is known as suicide bag?
(A) Lysosomes
(B) Mitochondria
(C) Vacuoles
(D) Both (A) and (B)
Answer
Ans – (A) Lysosomes
8. ________ are known as the power houses of the cell.
(A) Lysosomes
(B) Vacuoles
(C) Plastids
(D) Mitochondria
Answer
Ans – (D) Mitochondria
HBSE Class 9 Chapter 6 Tissues MCQ Important Questions 2024
1. Which tissue is present in the brain ?
(A) Plasma
(B) Phloem
(C) Neuron
(D) Tendon
Answer
Ans – (C) Neuron
2. Which tissue is responsible for movement in our body ? Most Important
(A) Nervous Tissue
(B) Epithelium Tissue
(C) Parenchyma
(D) Muscle Tissue
Answer
Ans – (D) Muscle Tissue
HBSE Class 9 Chapter 7 Motion MCQ Important Questions 2024
1. What does the odometer of an automobile measures?
(A) acceleration
(B) speed and distance
(C) distance covered by the automobile
(D) only speed
Answer
Ans – (C) distance covered by the automobile
2. A device used to measure the distance in vehicles is known as:
(A) Speedometer
(B) Sonometer
(C) Odometer
(D) Galvanometer
Answer
Ans – (C) Odometer
3. If an object moves in a circular path with uniform speed, its motion is called : Most Important
(A) Uniform circular motion
(B) Non-uniform motion
(C) Uniform curved motion
(D) Non-uniform curved motion
Answer
Ans – (A) Uniform circular motion
4. The Change in velocity per unit time is called:
(A) Velocity
(B) Acceleration
(C) Speed
(D) Distance
Answer
Ans – (B) Acceleration
5. The S.I. unit for acceleration is : Most Important
(A) Meter / Sec.
(B) Meter / Sec2
(C) Km/hour
(D) Meter Sec2
Answer
Ans – (B) Meter / Sec2
6. S.I. unit of Speed is :
(A) m/sec
(B) m/sec2
(C) metre
(D) m /minute2
Answer
Ans – (A) m/sec
HBSE Class 9 Chapter 8 Forces and Laws of Motion MCQ Important Questions 2024
1. What is the momentum of an object of mass M, moving with a velocity V? Most Important
(A) (1/2)MV2
(B) MV
(C) (MV)2
(D) MV2
Answer
Ans – (B) MV
2. The _________ of an object is the product of its mass and velocity.
(A) Acceleration
(B) Force
(C) Work
(D) Momentum
Answer
Ans – (D) Momentum
3. The S.I. unit of momentum is:
(A) kg ms–1
(B) kg ms–2
(C) ms–2
(D) ms–1
Answer
Ans – (A) kg ms–1
4. The S.I. unit of force is
(A) Newton
(B) Newton per second
(C) Newton-Meter
(D) Newton/Meter
Answer
Ans – (A) Newton
5. What is the quantity which is measured by the area occupied below the velocity-time graph ?
(A) Time
(B) Displacement
(C) Velocity
(D) Acceleration
Answer
Ans – (B) Displacement
6. Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the cabinet ?
(A) 100 N
(B) 150 N
(C) 200 N
(D) 250 N
Answer
Ans – (C) 200 N
7. The natural tendency of objects to resist a change in their state of rest or of uniform motion is called: Most Important
(A) Inertia
(B) Force
(C) Momentum
(D) Balanced force
Answer
Ans – (A) Inertia
8. “An object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied force.” Which law of motion states this fact?
(A) First law of motion
(B) Second law of motion
(C) Third law of motion
(D) None of these
Answer
Ans – (A) First law of motion
HBSE Class 9 Chapter 9 Gravitation MCQ Important Questions 2024
1. Weight of a body on Moon is _________ of its weight on earth. Most Important
(A) 1/3
(B) 1/4
(C) 1/6
(D) 3/4
Answer
Ans – (C) 1/6
2. Force of gravitation due to the earth is called: Most Important
(A) Density
(B) Pressure
(C) Gravity
(D) Thrust
Answer
Ans – (C) Gravity
3. The value of ‘g’ over earth surface is : Most Important
(A) 9.8 m/sec
(B) 9.8 m/sec2
(C) 9.8 meter
(D) 9.8 cm / sec2
Answer
Ans – (B) 9.8 m/sec2
4. Which scientist discovered universal law of gravitation ?
(A) Johannes Kepler
(B) Isaac Newton
(C) Archimedes
(D) None of these
Answer
Ans – (B) Isaac Newton
5. Mass of an object is 10 Kg. What is its weight on the earth?
(A) 10 N
(B) 10 Kg
(C) 98 kg
(D) 98 N
Answer
Ans – (D) 98 N
6. S.I. unit of weight is :
(A) Kelvin
(B) Newton
(C) Meter
(D) Pascal
Answer
Ans – (B) Newton
7. SI unit of density is :
(A) Newton
(B) Kilogram per cubic metre
(C) Cubic metre
(D) Pascal
Answer
Ans – (B) Kilogram per cubic metre
8. Which substance has maximum density?
(A) Air
(B) Iron
(C) Water
(D) Honey
Answer
Ans – (B) Iron
HBSE Class 9 Chapter 10 Work and Energy MCQ Important Questions 2024
1. Which form of energy does the flowing water possess?
(A) Potential Energy
(B) Electrical Energy
(C) Gravitational Energy
(D) Kinetic Energy
Answer
Ans – (D) Kinetic Energy
2. The potential energy stored in the bow due to change of its shape is thus used in the form of __________ energy in throwing off the arrow.
(A) Kinetic
(B) Heat
(C) Light
(D) Potential
Answer
Ans – (A) Kinetic
3. Work done = force x ________.
(A) Acceleration
(B) Velocity
(C) Speed
(D) Displacement
Answer
Ans – (D) Displacement
4. Work done on an object by a force would be ________ if the displacement of the object is zero.
(A) Half
(B) Zero
(C) Four times
(D) Eight times
Answer
Ans – (B) Zero
HBSE Class 9 Chapter 11 Sound MCQ Important Questions 2024
1. S.I. unit of frequency is :
(A) Hertz
(B) Meter
(C) Meter/Second
(D) Second
Answer
Ans – (A) Hertz
2. The audible range of sound for human beings is:
(A) 120 Hz to 2,000 Hz
(B) 20 Hz to 20,000 Hz
(C) 25 Hz to 20,000 Hz
(D) 200 Hz to 2,000 Hz
Answer
Ans – (B) 20 Hz to 20,000 Hz
3. Sounds of frequencies below _________ are called infrasonic sound.
(A) 20 Hz
(B) 200 Hz
(C) 2000 Hz
(D) 20000 Hz
Answer
Ans – (A) 20 Hz
4. The number of complete oscillations per unit time is called _________. Most Important
(A) Amplitude
(B) Wavelength
(C) Frequency
(D) Time period
Answer
Ans – (C) Frequency
5. In which of the media, does sound travel the fastest
(A) Iron
(B) Air
(C) Water
(D) All of the above
Answer
Ans – (A) Iron
6. The amount of sound energy passing each second through unit area is called _________.
(A) Amplitude
(B) Frequency
(C) Intensity of sound
(D) Wavelength
Answer
Ans – (B) Frequency
7. The sound which is produced due to a mixture of several frequencies is called a _________ and is pleasant to listen.
(A) Note
(B) Noise
(C) Wavelength
(D) Tone
Answer
Ans – (A) Note
8. The distance between two consecutive compressions or two consecutive rarefactions is called the ________.
(A) Frequency
(B) Wave length
(C) Time period
(D) Sound
Answer
Ans – (B) Wave length
HBSE Class 9 Chapter 12 Improvement in Food Resources MCQ Important Questions 2024
1. Which of these is weeds?
(A) Xanthium
(B) Parthenium
(C) Cyperinus Rotundus
(D) All of these
Answer
Ans – (D) All of these
2. Which of the following is Indian cow breed?
(A) Sahiwal
(B) Jersey
(C) Brown Swiss
(D) Leghorn
Answer
Ans – (A) Sahiwal
3. Macro nutrients are:
(A) Nitrogen
(B) Phosphorus:
(C) Sulphur
(D) All of these
Answer
Ans – (D) All of these
4. Which of the following is a finned fish?
(A) Prawn
(B) Mussel
(C) Oyster
(D) Pearl Spot
Answer
Ans – (A) Prawn
5. Micro nutrients are : Most Important
(A) Carbon
(B) Hydrogen
(C) Sulphur
(D) Zinc
Answer
Ans – (D) Zinc
6. Which resources fish may be obtained ? Most Important
(A) Marine resources
(B) Inland resources
(C) Both A and B
(D) None of these
Answer
Ans – (C) Both A and B
7. Growing two or more crops in definite row patterns is known as _________.
(A) Inter-cropping
(B) Crop-rotation
(C) Mixed cropping
(D) Mixed farming system
Answer
Ans – (A) Inter-cropping
8. Which of the following is Indian cow breed?
(A) Red Sindhi
(B) Brown Swiss
(C) Aseel
(D) Leghorn
Answer
Ans – (A) Red Sindhi
9. Which bees have high honey collection capacity?
(A) Apis Florae
(B) Apis cerana indica
(C) Apis Mellifera
(D) Apis Dorsata
Answer
Ans – (C) Apis Mellifera
10. In which of the following Carbon is present?
(A) Protein
(B) Carbohydrates
(C) Lipid
(D) All of the above
Answer
Ans – (D) All of the above
11. Infectious disease spread by:
(A) Water
(B) Air
(C) Vector Insects
(D) All of the above
Answer
Ans – (D) All of the above
12. Which of these is enriched in protein : Most Important
(A) Black gram
(B) Grain
(C) Peas
(D) All of these
Answer
Ans – (D) All of these