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Class 8 (888 questions)
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by GIANSH GUPTA KHUNDKER
· Class 8
Penicillin was discovered by:
a) Louis Pasteur
b) Alexander Fleming
c) Edward Jenner
d) Robert Koch
Science
Microorganisms
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by GIANSH GUPTA KHUNDKER
· Class 8
Which of the following microorganisms is responsible for converting milk into curd?
a) Yeast
b) Lactobacillus
c) Rhizobium
d) Amoeba
Science
Microorganisms
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by GIANSH GUPTA KHUNDKER
· Class 8
What do you call a path or route specifically marked for walking or biking in a forest or park?
A. Highway
B. Trail
C. Pavement
D. Aisle
English
Words Related to Outdoor Locations
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by GIANSH GUPTA KHUNDKER
· Class 8
Which word best describes a "scenic" view found during an outdoor activity?
A. Dull
B. Picturesque
C. Congested
D. Urban
English
Words Related to Outdoor Locations
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by GIANSH GUPTA KHUNDKER
· Class 8
Which word refers to a long journey or voyage organized for a specific goal, such as exploring a mountain?
A. Sightseeing
B. Expedition
C. Commute
D. Stroll
English
Words Related to Outdoor Locations
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by GIANSH GUPTA KHUNDKER
· Class 8
Identify the correct spelling for a long, angry speech of criticism.
a. Tirade
b. Tyrade
c. Tiraid
d. Tyraid
Spell Bee
Word Twins
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by GIANSH GUPTA KHUNDKER
· Class 8
Which word means "to make a problem or bad situation worse"?
a. Exascerbate
b. Exacerbate
c. Exasurbate
d. Exaccerbate
Spell Bee
Word Twins
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by GIANSH GUPTA KHUNDKER
· Class 8
Pick the correct spelling for a light, umbrella-shaped structure used for shade.
a. Parasoll
b. Parassol
c. Parasol
d. Perrasol
Spell Bee
Word Twins
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by GIANSH GUPTA KHUNDKER
· Class 8
Which word refers to a formal greeting or a show of respect?
a. Obeysance
b. Obeisance
c. Obesance
d. Obaysance
Spell Bee
Word Twins
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by GIANSH GUPTA KHUNDKER
· Class 8
Which planet is known as the "Red Planet" and has two small natural satellites called Phobos and Deimos?
a) Mercury
b) Venus
c) Mars
d) Neptune
Science
Stars and the Solar System
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by GIANSH GUPTA KHUNDKER
· Class 8
Two astronauts are performing a spacewalk outside the International Space Station. If one astronaut shouts loudly, why can the other not hear them without using a radio?
a) Sound travels too slowly in space to be heard.
b) The vacuum of space lacks a medium (matter) to transmit sound waves.
c) The astronauts' suits absorb 100% of the sound energy.
d) Sound becomes "ultrasonic" in space and is inaudible to humans.
Science
Sound
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by GIANSH GUPTA KHUNDKER
· Class 8
A student strikes a tuning fork and notices that it produces a shrill sound. If they want to increase the 'pitch' of this sound, which property of the vibration must they increase?
a) Amplitude
b) Speed of sound
c) Frequency
d) Time Period
Science
Sound
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by GIANSH GUPTA KHUNDKER
· Class 8
Pick the correctly spelled word meaning "a person with expert knowledge in a subject, like fine arts or food":
A. Connoissure
B. Connoiseur
C. Connoisseur
D. Conoisseur
Spell Bee
Jumble Tumble
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by GIANSH GUPTA KHUNDKER
· Class 8
What is the meaning of a product’s 'Ecological Footprint'?
a) The physical size of the product’s packaging.
b) The total amount of land and water required to produce the resources the product uses.
c) The number of miles a delivery truck drives to bring the product to your house.
d) The weight of the product in kilograms.
Green Warrior
Responsible Consumption and Production
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by GIANSH GUPTA KHUNDKER
· Class 8
Approximately one-third of all food produced globally is wasted. Which stage of the supply chain contributes most to 'Food Waste' in developed urban cities?
a) During the harvest on farms due to bad weather.
b) During transport from the farm to the factory.
c) At the consumer and retail level (households, restaurants, and supermarkets).
d) During the initial planting of seeds.
Green Warrior
Responsible Consumption and Production
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by GIANSH GUPTA KHUNDKER
· Class 8
Combine the provided Root with the Suffix/Prefix to form the correct Grade 8 word. Be careful—some words require spelling changes (like dropping an 'e' or doubling a letter) when joining parts!
Root: BENE (Good) + Suffix: FACTOR (One who does)
A. Bennifactor
B. Benefactor
C. Bennefactor
D. Benefactre
Spell Bee
Jumble Tumble
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by GIANSH GUPTA KHUNDKER
· Class 8
When a consumer chooses a product with an 'Ecolabel' (like Fair Trade or Energy Star), what are they primarily doing?
a) Buying the most expensive item available.
b) Supporting products that meet specific environmental or social sustainability standards.
c) Helping the company spend more money on colorful stickers.
d) Ensuring the product was made in a factory that doesn't use electricity.
Green Warrior
Responsible Consumption and Production
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by GIANSH GUPTA KHUNDKER
· Class 8
'Planned Obsolescence' is a major challenge to sustainable consumption. Which of the following is an example of this?
a) A laptop that can be easily upgraded with new parts.
b) A smartphone designed to slow down or break after two years so the user buys a new model.
c) A lightbulb that lasts for 20 years.
d) A clothing brand that uses recycled polyester.
Green Warrior
Responsible Consumption and Production
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by GIANSH GUPTA KHUNDKER
· Class 8
Which of these pairs contains a spelling error?
A. rejuvenate : revitalise
B. ravenous : starving
C. commotion : pandemonium
D. disorganised : choatic
Spell Bee
Jumble Tumble
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by GIANSH GUPTA KHUNDKER
· Class 8
A company decides to shift from a 'Linear Economy' to a 'Circular Economy.' What is the main difference in their production process?
a) They will produce goods faster to increase sales.
b) They will design products to be repaired, reused, or recycled instead of being thrown away.
c) They will use more plastic packaging to keep products safe during shipping.
d) They will only sell products in physical stores, not online.
Green Warrior
Responsible Consumption and Production
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