Chemistry in Everyday Life

Q. Which of the followings is incorrect about receptors?

1. A receptor can receive all type of chemical messages.
2. Chemical messages are received at the binding sites of receptors.
3. Shape of the receptor binding site changes when chemical messages are received.
4. It is crucial to communication system in the body.

Q.

The dark rich red-brown colour developed after applying natural henna to the legs is an example of _______

1. Synthetic Dye

2. Natural Dye

3. Tattoo

4. Ink

Q. Choose the correct pair of substances and their types from the following:

1. Vinegar
2. Washing soda
3. Clove
4. Turmeric
5. Olfactory Indicator
6. Visual Indicator
7. Base
8. Acid

Q.

Medicines that kill the disease-causing microbes and prevent their growth are known as

1. Analgesics

2. Antipyretics

3. Antiseptics

4. Antibiotics

Q.

The dark rich red-brown colour developed after applying natural henna to the legs is an example of _______

1. Tattoo

2. Ink

3. Natural Dye

4. Synthetic Dye

Q. Which of these substances reduce anxiety?

1. Analgesics
2. Antipyretics
3. Tranquillizer
4. Anaesthetic

Q. Choose the correct pair of substances and their types from the following:

1. Vinegar
2. Washing soda
3. Clove
4. Turmeric
5. Olfactory Indicator
6. Visual Indicator
7. Base
8. Acid

Q. Statement 1: Dettol is an antibiotic.
Statement 2: Antibiotics are used to kill microorganisms.

1. Only statement 1 is correct
2. Only statement 2 is correct
3. Both statements are correct

4. Both statements are incorrect