Chemistry Questions

Isotopes of an element have ______.

Charge on proton is equal to the charge on ______.

How many molecules are present in one mole of water?

The mass of one molecule of oxygen is

Which of the following causes acid rain?

I. SO2

II. NO2

III. CO2

Which of the following statements are CORRECT?

I. The soap molecules form structures called micelles.

II Soap micelles cannot scatter light.

III. Oily dirt gets collected in the center of the micelle.

Which of the following solutions is alkaline?

Which of the following statement(s) is/are CORRECT?

I. Acids are sour in taste and generate H+ ions.

II. Acids are sour in taste and generate OH– ions.

III. Bases are bitter intaste and generate OH– ions.