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Recent questions tagged materials
+3
votes
1
answer
Which of the following shows electrical conduction?
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
class-8
aiims
class-12
alternating current
metals and non-metals
materials
p-block element
+3
votes
1
answer
Iron is more reactive than copper. Can you write an activity to show this?
asked
Apr 4, 2019
by
kratos
metals and non-metals
materials
class-8
cbse
+3
votes
1
answer
The chief constituent of air is a. Hydrogen b. Oxygen c. Nitrogen
asked
Apr 2, 2019
in
Class 11
by
kratos
sanitation
the earth as a planet
class-8
metals and non metals
class-11
atmosphere
class-10
solid waste management
materials
states of matter
+2
votes
1
answer
The reaction of iron with copper sulphate solution is an example of :
asked
Apr 1, 2019
in
Class 10
by
kratos
physical
cbse
class-8
metals and non metals
acids bases and salts
class-7
class-10
chemical changes
chemical reactions and equations
materials
+3
votes
1
answer
Name a metal that does not react with cold as well as hot water but reacts with steam.
asked
Mar 29, 2019
in
Class 10
by
kratos
metals and nonmetals
materials
class-10
class-8
+2
votes
1
answer
Which non-metal is essential for our life and all living beings inhale it during breathing?
asked
Mar 29, 2019
by
kratos
class-8
metals and non metals
matter
metals and non-metals
materials
+2
votes
1
answer
Many metals and their alloys are used to prepare utensils why?
asked
Mar 25, 2019
in
JEE
by
kratos
metals and nonmetals
d-and f- block elements
class-8
metals and non metals
jee
class-6
jee mains
materials
water
+3
votes
1
answer
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for
asked
Mar 21, 2019
in
Class 12
by
kratos
metals and nonmetals
neet
materials
the living world
class-8
class-11
aiims
classification of living organisms
+1
vote
1
answer
Complete the crossword with the help of clues given below. Across 1. This is necessary for photosynthesis.
asked
Mar 17, 2019
by
kratos
coal and petroleum
class-8
combustion and flame
synthetic fibres and plastics
metals and non-metals
materials
pollution of air and water
+1
vote
1
answer
What are the products obtained when zinc metal is allowed to react with dilute solution of sodium hydroxide?
asked
Mar 16, 2019
in
JEE
by
kratos
cbse
class-8
jee main 2020
jee
class-10
jee mains
metals and non-metals
materials
qualitative analysis
p - block element
+1
vote
1
answer
Name a metal that does not react with any physical state of water.
asked
Mar 15, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
class-8
class-10
materials
+2
votes
1
answer
Give reason. Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. Why?
asked
Mar 12, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
class-8
class-10
materials
+3
votes
1
answer
A metal M does not liberate hydrogen from acids but reacts with oxygen to give a ***** colour product.
asked
Mar 10, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
class-8
class-10
materials
+3
votes
1
answer
Give suitable reason for the following– (a) Ionic solids are hard and brittle. (b) Copper is malleable and ductile
asked
Mar 8, 2019
in
Class 12
by
kratos
class-8
metals and non metals
solid state
materials
class-12
+3
votes
1
answer
Why does a copper vessel develop with green coating in rainy season?
asked
Mar 2, 2019
in
Class 10
by
kratos
metals and nonmetals
class-8
metals and non metals
class-10
metals and non-metals
chemical reactions and equations
materials
+3
votes
1
answer
Name a metal which produces hydrogen on reacting with alkali as well as with acid
asked
Feb 27, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
class-8
metals and non metals
class-10
materials
+1
vote
1
answer
When a metal X is treated with cold water, it gives a base Y with molecular formula XOH (Molecular mass = 40)
asked
Feb 27, 2019
in
Class 10
by
kratos
metals and nonmetals
class-8
class-10
metals and non-metals
materials
+1
vote
1
answer
(a) What type of oxides are formed when non-metals react with oxygen ? Explain with an example.
asked
Feb 27, 2019
in
Class 10
by
kratos
metals and nonmetals
materials
cbse
class-8
class-10
ncert class 10 science
+3
votes
1
answer
The metal M reacts vigorously with water to form a solution * and a gas G. The solution * turns red litmus to
asked
Feb 26, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
class-8
metals and non metals
class-10
chemical reactions and equations
materials
+3
votes
1
answer
The property of metals by which they can be beaten into thin sheets is called ...........
asked
Feb 20, 2019
in
Class 10
by
kratos
metals and non-metals
metallurgy
class-10
metals and non metals
class-8
icse
materials
cbse
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