ACIDS AND BASES

  The following materials that are acidic are....

• A. Toothpaste

• B. Tomatoes

• C. Ammonia

• D. Sodium hydroxide

• E. Soap solution

The type of acid found in the citrus is....

• A. Ascorbic acid

• B. Benzoic acid

• C. Citric acid

• D. Lactic acid

• E. Carbonic acid

The following materials that are alkaline are....

• A. Battery water

• B. Lime

• C. Vinegar

•  D. Soap solution

• E. Vitamin C

What is not an example of a base in everyday life is....

• A. Soap

• B. Antacids (mag medicine)

• C. Deodorant

•   D. Vinegar

•  E. Shampoo

Salt used as a food preservative is....

•  A. Sodium cyclamate

• B. Sodium benzoate

•   C. Sodium sulfate

• D. Sodium stearate

• E. Sodium phosphate

A child tries to dip red litmus paper into solution A, it turns out that litmus paper does not change its color, then red litmus paper is dipped into solution B, litmus paper changes color to blue. The correct conclusion of both solutions is ....

• A. Solution A and B are salts

• B. Solution A is both acidic and basic

• C. Solution A is acidic, solution B is basic

• D. Solution A and B are acidic

• E. Solution A and B are basic

If hibiscus extract is used as an acid-base indicator, the following symptoms are correct....

• A. In acid it is red and in base it is green

• B. In acid it is green and in base it is red

• C. In acid is purple and in base is red

• D. In acid is red and in base is purple

• E. In the acid is orange and in the base is blue

The following materials used as natural acid-base indicators are....

• A. Orange peel

• B. Mangosteen peel

• C. Tomato peel

• D. Banana peel

•  E. Mango peel

Alkaline compounds commonly used to tenderize meat are....

• A. Klerek

• B. Soda water

• C. Papain

• D. Ammonium hydroxide

• E. Sodium hydroxide

The following are acids:

1) HCl

2) H2SO4

3) HNO3

4) CH3COOH

5) HCN

Weak acid solutions are shown by the number....

• A. 1 and 5

• B. 2 and 4

• C. 1 and 3

• D. 4 and 5

• E. 2 and 5