Student Questions

Choose the correctly spelled word: A. Appitizing B. Appetizing C. Appitiseing D. Appetiseing

An object is dropped from a cliff in the absence of air resistance. What happens to its velocity and acceleration? A. Both increase. B. Velocity increases, acceleration remains constant. C. Velocity remains constant, acceleration increases. D. Both remain constant.

If an astronaut takes a 100 kg rock from the Earth to the Moon, what happens to the mass and weight of the rock? A. Mass changes, weight remains the same. B. Mass remains the same, weight changes. C. Both remain the same. D. Both change.

What does the "red data book" keep a record of? A. Endangered species. B. Deforestation rates. C. Water pollution levels. D. Mineral resources

Which method is most effective for conserving soil? A. Deforestation B. Overgrazing C. Afforestation D. Over-irrigation

Which of the following is not a fossil fuel? A. Coal B. Petroleum C. Natural Gas D. Wood

The process where bacteria convert soil nitrogen into molecular nitrogen is called: A. Nitrogen fixation B. Nitrification C. Denitrification D. Ammonification

Which of the following is responsible for the destruction of the ozone layer? A. Carbon monoxide B. Carbon dioxide C. Chlorofluorocarbons (CFCs) D. Nitrogen dioxide

In a composite fish culture system, Catla fishes are typically: A. Surface feeders B. Middle-zone feeders C. Bottom feeders D. Feed on aquatic weeds

What does not come out of volcanoes?

How much time will take for it take for light to reach earth

I'm a muscle under the lungs I pull the lungs open to take in air.

Which of the following Roman Numeral expressions is incorrect? A. LX + IV = 64 B. XC - X = 80 C. CD + C = 500 D. XL + VI = 46

If a shop offers a "Buy 2 Get 1 Free" deal, what is the actual percentage discount you are getting on the total number of items? A) 50% B) 33.33% C) 25% D) 20%

A toy car originally cost ₹500. During a sale, the price was reduced by 10%, and then reduced by another 10% on the new price. What is the final price? A) ₹400 B) ₹405 C) ₹410 D) ₹450

Which is greater: 40% of 50 or 50% of 40? A) 40% of 50 B) 50% of 40 C) They are both equal D) Cannot be determined

If the ratio of milk to water in a mixture is 4:1, what percentage of the total mixture is water? A) 25% B) 10% C) 20% D) 40%

Acid rain is formed when certain gases from factories mix with water vapour in the air. Which of the following is a long-term "hidden" effect of acid rain on a forest? A) It washes away all the leaves so the trees look like it is winter. B) It changes the soil chemistry, dissolving vital nutrients that trees need to grow. C) It makes the forest floor too slippery for animals to walk on. D) It causes the trees to grow much faster than normal, making them weak.

Many cities are painted white or have "green roofs" (plants on top of buildings). How does this help specifically with "Thermal" or "Heat" pollution in a city? A) It makes the buildings look pretty so people forget the heat. B) It reflects sunlight and absorbs less heat, reducing the "Urban Heat Island" effect. C) It stops the wind from blowing through the city streets. D) It increases the amount of noise the buildings can absorb.

If a scientist finds high levels of a pesticide in an eagle’s egg, even though the pesticide was only sprayed on a farm 50 miles away, which process is occurring? A) Natural selection B) Photosynthesis C) Biomagnification D) Evaporation