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All Grades / Science (1553 questions)
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by RAJANYA MONDAL
· Class 7
A sample of dry air contains approximately 78% nitrogen, 21% oxygen, 0.93% argon and 0.04% carbon dioxide.If a container holds 2,500 litres of dry air, approximately how many litres of gases other than nitrogen and oxygen does it contain?
Science
Winds, Storms and Cyclones
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by RAJANYA MONDAL
· Class 7
What is the SI unit of pressure?
Science
Winds, Storms and Cyclones
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by RAJANYA MONDAL
· Class 7
In which organ of the human body is bile stored?
Science
Other
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by RAJANYA MONDAL
· Class 7
What is the main function of the epiglottis during swallowing?
Science
Nutrition in Plants and Animals
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by RAJANYA MONDAL
· Class 7
Food can move through the oesophagus even when a person is lying horizontally because of:
Science
Nutrition in Plants and Animals
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by RAJANYA MONDAL
· Class 7
A nutrient has crossed the intestinal lining and entered the bloodstream, but has not yet been used by cells. Which process has occurred?
Science
Nutrition in Plants and Animals
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by RAJANYA MONDAL
· Class 7
A pitcher plant catches insects even though its leaves contain chlorophyll. What is the main nutritional advantage?
Science
Nutrition in Plants and Animals
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by RAJANYA MONDAL
· Class 7
Cuscuta obtains much of its nourishment from a living host. Which structure helps it connect with host tissues?
Science
Nutrition in Plants and Animals
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by ADITRI BHAVYA
· Class 6
Which vitamin is prduced by the sun ?
Science
Food and its Components
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people 4 answers
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by RAJANYA MONDAL
· Class 7
A person eats plenty of rice but very few pulses, milk, eggs or other protein-rich foods. Which function may be affected most directly?
Science
Nutrition in Plants and Animals
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by VARADH PRAGHOSH
· Class 1
What is the atomic number of (Ca) calcium.
Science
Other
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by ADITRI BHAVYA
· Class 6
What is the green pigment in plants' leaves which make them green?
Science
Living Organisms and Their Surroundings
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people 3 answers
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by RAJANYA MONDAL
· Class 7
Which nutrient provides approximately 9 kcal of energy per gram?
Science
Nutrition in Plants and Animals
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by ADITRI BHAVYA
· Class 6
If a girl is holding an object in front of her face and her face is partly visible then what kind of object it could be based on transperancy?
Science
Light, Shadows and Reflections
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by ADITRI BHAVYA
· Class 6
Which fiber related to linen ?
Science
Fibre to Fabric
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by ADITRI BHAVYA
· Class 6
Which is a natural magnet?
Science
Fun with Magnets
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people 3 answers
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by ADITRI BHAVYA
· Class 6
Which process is used to separate water and alcohol?
Science
Fun with Magnets
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people 3 answers
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by MOKSH CHAWLA
· Class 3
What is the purpose of gravity?
Science
Force
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people 3 answers
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by ADWAITH KUMAR JHA
· Class 3
What is the cheapest way of communication?
Science
Communication
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people 3 answers
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by SAMBIT KUNDU
· Class 4
there are how many planets in earth
Science
Earth and Universe
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people 3 answers
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