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BEE3B-Practicum-Periodic Elements

Authored by Noemi Miranda

Chemistry

7th Grade

Used 8+ times

BEE3B-Practicum-Periodic Elements
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Brass gets discoloured in air because of the presence of which of the following gases in air?

Oxygen

Hydrogen sulphide

Carbon dioxide

Nitrogen

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a non metal that remains liquid at room temperature?

Phosporus

bromine

chlorine

Helium

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Chlorophyll is a naturally occurring chelate compound in which central metal is

Copper

Magnesium

Iron

Calcium

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is used in pencils?

Graphite

Silicon

Charcoal

Phosphorous

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following metals forms an amalgam with other metals?

Tin

Mercury

Lead

Zinc

6.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Magnesium, Calcium , Iron and Aluminum are examples of what group

7.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Chlorine, Oxygen , Bromine and lodine are examples of what group f elements.

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