Better homes To increase crop yield. Health and hygiene Refined oil, vegetable ghee, baby food, etc. Fertilisers Steel, cement, glass, paints, etc. Food processing Sulpha drugs, Paracetamol, etc. Control over diseases Soaps, detergents, cosmetics, etc.

Better homes include homes made of steel, cement, glass, paints, etc. Steel makes the house strong, cement provides a strong base, paint gives the aesthetic look, glasses makes the house beautiful. A house gives us a shelter to live in and protects us from storms, heavy rains, snowfalls, wild animals, thieves and many more. Health and hygiene include soaps, detergents, cosmetics, etc. Soaps are used to wash off the germs from the body, detergent is used to wash the clothes and cosmetic to look presentable. Fertilisers are used to increase crop yield. Fertilisers are any substance such as manure or a mixture of nitrates used to make soil more fertile. Food processing include refined oil, vegetable ghee, baby food, etc. Refined oil and vegetable ghee is used in cooking food. Baby food is the food provided for the babies. A food is something that provides nutrients and energy. Control over diseases can be done by using sulpha drugs, paracetamol, etc. Medicines are chemicals or compounds used to cure or prevent disease. Advances in medicines have enabled doctors to cure many diseases and save lives. Better homes Steel, cement, glass, paints, etc. Health and hygiene Soaps, detergents, cosmetics, etc Fertilisers To increase crop yield. Food processing Refined oil, vegetable ghee, baby food, etc. Control over diseases Sulpha drugs, Paracetamol, etc.

EASY

Earn 100

Which of the following represents a dark side of chemistry?

40% studentsanswered this correctly

Important Questions on Introduction to Chemistry

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Write some emerging technologies in chemistry that are changing the face of future.

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Find the odd-one-out. Give reasons.

Fertiliser, Soya bean, Insecticide, Pesticide.

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Write the name of a fertilizer used in agriculture. It is a four-letter word and the word starts with the letter "U".

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Briefly explain the importance of chemistry in our daily life.

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

It is possible to conduct experiments to recreate the events that have happened in the past.

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Our society devotes many useful resources for developing technology and collecting knowledge about our world and also outer space.

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Describe the importance of chemistry in daily life.

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Represent the union of two sets by Venn diagram for each of the following.

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Find the odd-one-out. Give reasons.

D.D.T., B.H.C., T.N.T.

HARD

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Better homes	To increase crop yield.
Health and hygiene	Refined oil, vegetable ghee, baby food, etc.
Fertilisers	Steel, cement, glass, paints, etc.
Food processing	Sulpha drugs, Paracetamol, etc.
Control over diseases	Soaps, detergents, cosmetics, etc.

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Which of the following can be studied under chemistry?

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Describe and mention one of the example of modern chemistry that we see now, which began during the

16

th and the

17

th centuries?

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Write few lines about the Green Revolution.

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Safer alternatives to environmentally hazardous refrigerants like CFCs (chlorofluorocarbons), responsible for _____ depletion in the stratosphere, have been successfully synthesised. (Answer in a single word)

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Why do farmers use fertilizers? Name two important fertilizers.

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Select the correct sequence for performing a scientific experiment.

MEDIUM

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Why do farmers add fertilizers and manures to the soil in their farms and fields?

EASY

Science>Chemistry>Introduction to Chemistry>Dark side of chemistry

Why is ‘necessity' called ‘the mother of invention’?