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Recent questions tagged metals and non-metals
+3
votes
1
answer
State the conditions under which the iron articles get rusted. Design an activity to investigate the conditions necessary for rusting.
asked
Apr 7, 2019
in
Class 10
by
kratos
metals and non-metals
chemical reactions and equations
class-10
cbse
+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
+2
votes
1
answer
ln which of the following beakers reaction will take place?
asked
Apr 5, 2019
in
Class 10
by
kratos
metals and non-metals
class-10
class-8
+2
votes
1
answer
In the formation of MgO the magnesium atom (at. no. 12) loses two electrons from its valence shell.
asked
Apr 5, 2019
in
Class 12
by
kratos
neet
chemical bonding
class-11
jee
molecular structure
class-9
class-10
jee mains
metals and non-metals
+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
+2
votes
1
answer
Give reason. Chemical reaction does not take place when copper is added to iron sulphate solution. Why?
asked
Apr 3, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
acids bases and salts
class-10
metals and non-metals
ncert class 10 science
+2
votes
1
answer
HF is not preserved in glass bottles because (a) it reacts with the aluminium oxide of the glass
asked
Mar 31, 2019
in
Class 12
by
kratos
p - block elements
cbse
p-block elements
acids bases and salts
class-10
metals and non-metals
class-12
+3
votes
1
answer
A non-metal X which is the largest constituent of air combines with hydrogen when heated in
asked
Mar 29, 2019
in
Class 10
by
kratos
metals and nonmetals
metals and non-metals
class-10
periodic classification of elements
+2
votes
1
answer
Potassium, sodium, magnesium are high reactive metals and occur as chlorides in nature. Suggest and explain the suitable method
asked
Mar 29, 2019
in
JEE
by
kratos
metals and nonmetals
class-11
jee
stoichiometry
class-10
mole concept
jee mains
metals and non-metals
+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
+1
vote
1
answer
A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air.
asked
Mar 29, 2019
in
Class 10
by
kratos
metals and non-metals
class-10
metals and nonmetals
cbse
+1
vote
1
answer
A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air.
asked
Mar 25, 2019
in
Class 10
by
kratos
metals and nonmetals
cbse
metals and non metals
class-10
metals and non-metals
+1
vote
1
answer
(a) Write the electron dot structures of sodium, oxygen and magnesium.
asked
Mar 22, 2019
in
Class 10
by
kratos
metals and non-metals
class-10
metals and nonmetals
+1
vote
1
answer
Name : The most abundant element in the earth’* crust.
asked
Mar 21, 2019
in
Class 12
by
kratos
air
class-8
atmosphere
class-7
icse
metals and non-metals
class-12
p - block element
+1
vote
1
answer
Anita bought silver jewellery along with her friend Rita.
asked
Mar 19, 2019
in
Class 12
by
kratos
cbse
class-8
class-10
metals and non-metals
class-12
+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
+3
votes
1
answer
Write one example of each of the following : (i) Most malleable metal and most ductile metal.
asked
Mar 14, 2019
in
Class 10
by
kratos
metals and non-metals
class-10
class-8
cbse
+1
vote
1
answer
Which property of substance can be studied with this procedure?
asked
Mar 13, 2019
in
Biology
by
kratos
some basic concepts of chemistry
cell biology
class-8
jee main 2021
jee
ntse
class-7
jee mains
jee main
metals and non-metals
+1
vote
1
answer
(i) Explain the formation of ionic compound CaO with electron dot structure. Atomic number of calcium and oxygen are 20 and 8 respectively.
asked
Mar 12, 2019
in
Class 10
by
kratos
metals and non-metals
class-10
cbse
metals and nonmetals
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