MEDIUM
8th CBSE
IMPORTANT
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Metals are generally solid. Which of the following metals is in the liquid state at room temperature?

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Important Questions on Materials: Metals and Non-metals

MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 7
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 8
Which of the following reacts with cold water vigorously?
HARD
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 9
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 10
Which of the following non-metals reacts and catches fire on exposure to air?
EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 11
The most reactive metal is
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 12
The non-metal which is liquid at room temperature is
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 13
Which metal is present in haemoglobin?
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 4 - Materials: Metals and Non-metals>Chapter Practice>Q 14
Which of the following is very hard?