Senior KG Science Student Questions

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Showing: All Grades / Science (1553 questions)

by RAJANYA MONDAL · Class 7

What is the SI unit of heat?

Science Heat 0 2 answers 100%
by RAJANYA MONDAL · Class 7

A convex lens has a focal length of 20 cm. An object is placed 30 cm from the lens. The image distance is:

Science Light 0 1 answers 0%
by RAJANYA MONDAL · Class 7

A ray of light falls on a plane mirror at an angle of 35° with the mirror surface. What is the angle of reflection?

Science Light 0 1 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

During oxidative phosphorylation in aerobic cellular respiration, which component of the mitochondrion builds up a high concentration gradient of protons (H⁺) to drive ATP synthesis via ATP synthase?

Science Other 0 2 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

If 20.0 g of sulfur dioxide (SO₂) reacts with 10.0 g of oxygen (O₂) to produce sulfur trioxide (SO₃) according to the balanced equation 2SO₂(g) + O₂(g) → 2SO₃(g), what is the mass of the excess reactant remaining unreacted? (Molar masses: SO₂ = 64 g/mol, O₂ = 32 g/mol)

Science Other 0 0 answers 0%
by GIANSH GUPTA KHUNDKER · Class 9

An object moves along a straight line such that its velocity v as a function of time t is given by v(t) = 3t² - 12t + 9 (in m/s). What is the total distance traveled by the object in the time interval from t = 0 s to t = 3 s?

Science Other 0 0 answers 0%
by RAJANYA MONDAL · Class 7

Which structures help insects breathe?

Science Respiration in Organisms 0 1 answers 0%
by RAJANYA MONDAL · Class 7

Which animal breathes through its moist skin?

Science Respiration in Organisms 0 1 answers 100%
by RAJANYA MONDAL · Class 7

Which of the following has a pH less than 7?

Science Acids, Bases and Salts 0 1 answers 100%
by GIANSH GUPTA KHUNDKER · Class 9

Why do we fall ill?

Science Why Do We Fall Ill 0 0 answers 0%
by P PRANAVANJANA · Class 6

Which gas is essential for photosynthesis?

Science Other 0 10 answers 90%
by RAJANYA MONDAL · Class 7

During the day, a sea breeze generally blows:

Science Winds, Storms and Cyclones 1 3 answers 100%
by RAJANYA MONDAL · Class 7

Which instrument is used to measure wind speed?

Science Winds, Storms and Cyclones 0 1 answers 100%
by RAJANYA MONDAL · Class 7

The long, continuous filament of silk is obtained from the:

Science Fibre to Fabric 0 1 answers 100%
by RAJANYA MONDAL · Class 7

The process of separating cotton fibres from cotton seeds is called:

Science Fibre to Fabric 0 1 answers 100%
by SAWAN KUMAR · Class 8

Rhizobium bacteria live in symbiotic association within the root nodules of which group of plants to fix atmospheric nitrogen?

Science Microorganisms 0 10 answers 80%
by SAWAN KUMAR · Class 8

Which organelle lacks ribosomes on its outer surface and is primarily responsible for lipid synthesis and detoxification of poisons in a cell?

Science Microorganisms 0 5 answers 60%
by SAWAN KUMAR · Class 8

Which of the following cell organelles contains chlorophyll and is exclusively found in plant cells to perform photosynthesis?

Science Microorganisms 1 5 answers 60%
by HARNOOR KAUR · Class 8

A sound becomes louder, but its pitch stays the same. What changed?

Science Sound 0 6 answers 67%
by HARNOOR KAUR · Class 8

Two identical bulbs are connected in series to a battery. One bulb breaks. What happens?

Science Chemical Effects of Electric Current 0 5 answers 100%

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