ICSE Class 6 Chemistry — Important Questions

Which scientist discovered the radioactive metal radium and won the Nobel Prize twice?

Food preservatives are added to food items to:

Which of the following is a synthetic fibre used in the textile industry?

What is the primary purpose of having an exhaust fan fitted near the roof of a chemistry laboratory?

A student needs to grind a solid crystal into fine powder before dissolving it. Which pair of apparatus should be used?

During an experiment, a student accidentally spills a corrosive chemical on their hand. What is the CORRECT first action to take?

Naphthalene balls kept in a wardrobe disappear over time without leaving any liquid behind. What process is responsible, and what is the correct sequence of change?

The odour of an incense stick lit in one corner of a room spreads throughout the room quickly. Which property of matter is PRIMARILY responsible for this, and why does it happen faster in gases than in liquids?

A thermometer works on a specific property of liquids. When you place it under your tongue, the mercury rises. When you remove it, the mercury stays at that level. Which combination of properties explains this behaviour?