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Class 9 (862 questions)
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by GIANSH GUPTA KHUNDKER
· Class 9
An object is taken from the Earth to the Moon. In this process:A) Both its mass and weight change.B) Its mass changes but its weight remains the same.C) Its mass remains the same but its weight changes.D) Neither its mass nor its weight changes.
Science
Gravitation
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by GIANSH GUPTA KHUNDKER
· Class 9
Why do school bags have wide straps?A) To decrease the total weight of the bag.B) To increase the pressure exerted on the shoulder.C) To decrease the pressure exerted on the shoulder.D) To make the bag look more attractive.
Science
Gravitation
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by GIANSH GUPTA KHUNDKER
· Class 9
An object will float on the surface of a liquid if:A) Its density is greater than the density of the liquid.B) Its density is less than or equal to the density of the liquid.C) Its mass is greater than the mass of the liquid displaced.D) The buoyant force acting on it is zero.
Science
Matter in Our Surroundings
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by GIANSH GUPTA KHUNDKER
· Class 9
In Rutherford’s gold foil experiment, why did a tiny fraction of alpha particles rebound back by 180 degrees?
A) Because the atom is completely solid throughout.
B) Because electrons exert a massive repulsive force.
C) Because the positive charge and mass are concentrated in a tiny central nucleus.
D) Because alpha particles are highly attracted to gold atoms.
Science
Matter in Our Surroundings
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by GIANSH GUPTA KHUNDKER
· Class 9
Which of the following conditions will drastically speed up the rate of evaporation of a liquid?A) Decrease in surface area, increase in humidity.B) Increase in surface area, increase in wind speed.C) Decrease in temperature, increase in wind speed.D) Increase in humidity, increase in temperature.
Science
Matter in Our Surroundings
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by GIANSH GUPTA KHUNDKER
· Class 9
Which of the following phenomena always results in a cooling effect?A) CondensationB) EvaporationC) SublimationD) Fusion
Science
Structure of Atom
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by GIANSH GUPTA KHUNDKER
· Class 9
Which of the following statements correctly defines a pair of isotopes?A) Atoms with the same mass number but different atomic numbers.B) Atoms with the same atomic number but different mass numbers.C) Atoms with the same number of neutrons but different protons.D) Atoms with identical physical properties but different chemical reactions.
Science
Structure of Atom
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by GIANSH GUPTA KHUNDKER
· Class 9
Which subatomic particle was discovered by J.J. Thomson using the cathode ray tube experiment?A) ProtonB) NeutronC) ElectronD) Alpha particle
Science
Structure of Atom
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by GIANSH GUPTA KHUNDKER
· Class 9
Which range of frequencies represents the average audible range for a healthy human ear?
A) 0 Hz to 20 Hz
B) 20 Hz to 20,000 Hz
C) 20,000 Hz to 50,000 Hz
D) 200 Hz to 2,000 Hz
Science
Sound
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by GIANSH GUPTA KHUNDKER
· Class 9
Through which of the following media can sound waves travel at the highest speed?
A) Vacuum
B) Water
C) Air
D) Steel
Science
Sound
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by GIANSH GUPTA KHUNDKER
· Class 9
To make an embedded background video play automatically and continuously without stopping, which combination of boolean attributes must be added to the <video> tag?
A) autoplay loop
B) start repeat
C) play continuous
D) auto replay
Cyber
HTML Multimedia
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by GIANSH GUPTA KHUNDKER
· Class 9
Which attribute is used within a <source> tag to specify the media type (MIME type) of the linked file?
A) src
B) type
C) media
D) format
Cyber
HTML Multimedia
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by GIANSH GUPTA KHUNDKER
· Class 9
Which of the following is NOT a natively supported video file format in standard HTML5?A) Math
B) WebM
C) Ogg
D) WMV
Cyber
HTML Multimedia
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by GIANSH GUPTA KHUNDKER
· Class 9
Which HTML5 tag is used to embed a standalone audio file directly into a webpage?
A) <sound>
B) <audio>
C) <embed>
D) <music>
Cyber
HTML Multimedia
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by GIANSH GUPTA KHUNDKER
· Class 9
Complete the sentence: "The management decided to reward the employees ______ project generated the highest revenue."
a) who's
b) whose
c) which
d) whom
English
Pronouns
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by GIANSH GUPTA KHUNDKER
· Class 9
Which of the following is a collective noun?
A) MountainB) FlockC) HonestyD) Fire
English
Nouns
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by GIANSH GUPTA KHUNDKER
· Class 9
Identify the abstract noun in the following sentence:"Her bravery in the face of danger inspired everyone."
A) BraveryB) FaceC) DangerD) Everyone
English
Nouns
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by GIANSH GUPTA KHUNDKER
· Class 9
Active and passive voice
The chef prepares the meal.
A) The meal prepared by the chef.B) The meal is prepared by the chef.C) The meal was prepared by the chef.D) The meal is preparing by the chef.
English
Voices
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by GIANSH GUPTA KHUNDKER
· Class 9
The list of items ________ on the desk.
A) areB) isC) wereD) have
English
Tenses
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by GIANSH GUPTA KHUNDKER
· Class 9
Determiners
I don't have ________ money left in my wallet.
A) manyB) muchC) someD) few
English
Other
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