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chemistry
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chemistry
Flashcards
26 cards
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Questions
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Answers
1
The common salt is called as
sodium chloride
potassium chloride
copper chloride
2
Identify the Acid from the list below
HCl
H2SO4
Sodium Carbonate
Ammonia
3
Industries also release the same gas we breath out, identify it
NO2
CO2
CO4
CO3
4
This formula represents
Hydrochloric acid
Nitric acid
sulphuric acid
sodium hydroxide
5
The following apparatus is used for
Evaporation
Condensation
Distillation
Fractional Distillation
6
Hydrochloric acid is formed by which 2 elements
H and Cl
N and H
C and O
H and O
7
The reaction in which temperature is taken in.....
Exothermic
Chemical reaction
Endothermic reaction
Neutralisation
8
Most metals are found in which part of the periodic table
Left
Right
Bottom
Left & middle
9
This is a 'stronger' Metal and also excellent 'wear resistant'
Aluminium
Bronze
Iron
Copper
10
if you increase the temperature the rate of a reaction
Increases
All the above
Decreases
Stay the same
11
which of the following is a liquid at room temperature?
Element C m.p.40
Element B m.p.22
Element A m.p.35
Element D m.p.50
12
Fractionating column is used for
Breaking Hydrocarbons
Making Crude oil
Distilation of crude oil fractions
Making Ethylene
13
Acids reacting with Alkalis/bases is an example of
Acid base reaction
Chemical reaction
Neutralisation reaction
Exothermic reaction
14
This reaction is an example of
chemical reaction
Exothermic reaction
Neutralisation reaction
Endothermic reaction
15
The only liquid metal in the periodic table
hydrogen
mercury
gold
silver
16
which of the following is an IRON Ore (basic raw material (rock)
Fe
Fe2O3
CaCl2
Al2O3
17
Which of the following is an example of chemical change?
Mixing water and salt
Melting of ice
Burning of wood
Tearing a paper
18
'Copper' can only be produced by using electricity. Choose the correct one
Burning Charcoal with Copper ore
Heating in an lectric furnace
Grinding and Dissolving the ore in acid
Electrolysis
19
Helium is in which group?
group 3
group 2
group 4
O or group 8
20
Name the following apparatus
Purification flask
Fractional Distillation set up
Filtration flask
Condensation flask
21
The elements in the middle of the periodic table are called
Halogens
Transition elements
Alkali metals
Alkaline-earth
22
Which of the following is used as a cooking gas in homes?
Nitrous oxide gas
Nitrogen Gas
Helium Gas
Liquified Petroleum gas - LPG
23
The chemical name of Limestone is
silica
sodium carbonate
calcium carbonate
potassium carbonate
24
Bromine is a
Non-metal, solid
Non-metal, Gas
Non_metal, Liquid
metal, Liquid
25
Which of the following is a reversible reaction?
Making a cake
Ice melting
Making an Omelette
Burning wood
26
Which of the following is used for ripening of fruits?
Carbide gas
Acetylene gas
Methane gas
Ethylene gas
