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OCR Gateway C2 C grade Flashcards | StudBud
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OCR Gateway C2 C grade
OCR Gateway C2 C grade
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Questions
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Answers
1
What is the symbol for ammonia?
NH3
NH4
NH
NH2
2
Limestone is also known as...
Calcium oxide
Calcium carbonate
Oxide
Carbon oxide
3
When volcanoes erupt, which type of lava is more explosive?
Runny
Water
Thick
Magma
4
What is the piece of equipment labelled X?
Filter
Neutraliser
Burette
Pipette
5
What process do we use to separate salt (sodium chloride) into chlorine and hydrogen?
Evaporation
Neutralisation
Electrolysis
Mining
6
What is the following is
not
a use for brass?
Fillings.
Musical instruments.
Name plates.
Electrical circuits.
7
What are the products for the reaction between acid and alkali?
Just salt.
Salt and hydrogen.
Salt, water and carbon dioxide.
Salt and water.
8
Suggest a quick way of separating scrap aluminium and scrap steel?
Pick them out.
Filtration.
In water.
A magnet.
9
Give one use of sodium chloride in the home?
As a finisher.
As a preservative.
As a colourant.
As an icicle.
10
Which one of these is NOT an element needed by plants
Phosphorus
Oxygen
Potassium
Nitrogen
11
What effect does chlorine have on moist litmus paper?
It kills rats dead.
It bleaches moist litmus paper.
It turns red litmus paper blue.
It turns blue litmus paper red.
12
The diagram shows the earth's structure. Which part is the lithosphere?
The Crust.
The mantle
The lower half of the mantle and the core.
The crust and the top part of the mantle
13
Name the two substances that must be in contact with an iron nail to cause it to rust?
Water and salt.
Oxygen and Hydrogen.
Oxygen and water.
Air and methane.
14
In the Haber process where does the hydrogen come from?
Water.
Natural gas and water.
Air.
Natural gas and methane.
15
What is an alkali?
An acid that will dissolve.
A base that won't dissolve.
An acid that won't dissolve.
A base that will dissolve.
