Acids

Q.

The substance that undergoes chemical change is known as:

1. reactant

2. catalyst

3. none of the above

4. product

Q.

What would happen when lemon juice mixed with baking powder

Q.

How does acid rain affect buildings?

Q. Give three examples of acids and bases. [3 MARKS]

Q. Citric acid is present in food items like:

1. curd
2. lemons
3. oranges
4. apples

Q. Which of the following substances does not contain acids in it?

1. Soap
2. Grapes
3. Bleaching powder
4. Urine

Q.

The word ___ comes from the Latin word 'acere' which means sour.

Q. Which of the following represent correct pairs of acid and food items which contain them?

1. Citric acid - Curd
2. Citric acid - Lemon
3. Tartaric acid - Tamarind
4. Lactic acid - Buttermilk

Q. Sarah demonstrated a magic trick by rubbing a plain white paper with a handkerchief. It was observed that green letters appeared on the paper after rubbing. Which of the following materials might have been used by her in the magic trick?

1. Soap and red cabbage juice
2. Sulphuric acid and phenolphthalein
3. Hydrochloric acid and methyl orange
4. Vinegar and turmeric

Q. Sarah demonstrated a magic trick by rubbing a plain white paper with a handkerchief. It was observed that green letters appeared on the paper after rubbing. Which of the following materials might have been used by her in the magic trick?

1. Sulphuric acid and phenolphthalein
2. Vinegar and turmeric
3. Soap and red cabbage juice
4. Hydrochloric acid and methyl orange

Q. Which of the following will give a green colour to china rose solution?

1. Face wash
2. Ketchup
3. Lemon
4. Soda

Q. Sushweta makes a drink for which she adds lemon juice to water. The drink will be in taste.

1. bitter
2. salty
3. sweet
4. sour

Q. Which of the following will give a green colour to china rose solution?

1. Ketchup
2. Face wash
3. Soda
4. Lemon