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Recent questions tagged chemistry
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In an atomic explosion, enormous energy is released which is due to
cbsc
class 7
olympiad
science
chemistry
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Aug 14, 2017
by
meena.p
1
answer
Water is neither acidic nor alkaline because
cbsc
class 7
olympiad
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
Compared to ionic compounds, covalent bonds have
cbsc
class 7
olympiad
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
What is laughing gas?
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chemistry
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Aug 14, 2017
by
meena.p
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answer
Two main requirements to make ammonia are
cbsc
class 7
olympiad
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
Hypothesis that matter has a continuous composition which can always be broken down into smaller and smaller pieces was given by
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class 7
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chemistry
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Aug 14, 2017
by
meena.p
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A simple electron species in energy level with energy X was provided with e
chemistry
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Aug 14, 2017
by
mahendracaet
0
answers
The equivalent weight of the metal is 4.5 and the molecular weight of its c
chemistry
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Aug 14, 2017
by
khatrinazparvin
1
answer
Which of the following are the ingredients of gun metal?
cbsc
class 7
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
Which of the following are true regarding a catalyst? <br> 1. It is a substance which increases the rate of reaction. <br> 2. It is a substance which reduces the activation energy. <br> 3. It is a substance which increases the activation energy. <br> 4. It is a substance which is consumed in the reaction.
cbsc
class 7
olympiad
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
If baking soda or fruit salt is mixed with vinegar there takes place a
cbsc
class 7
olympiad
science
chemistry
t6
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Aug 14, 2017
by
meena.p
2
answers
Fog would most likely occur when
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class 7
olympiad
science
chemistry
t6
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Aug 14, 2017
by
meena.p
1
answer
Sodium becomes a cation because
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chemistry
t5
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Aug 14, 2017
by
meena.p
1
answer
Stars are made up of two most abundant elements in universe namely
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class 7
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chemistry
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Aug 14, 2017
by
meena.p
1
answer
Permanent hardness of water may be removed by the addition of
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class 7
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chemistry
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Aug 14, 2017
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meena.p
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answer
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
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class 7
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science
chemistry
t5
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Aug 14, 2017
by
meena.p
1
answer
using electrolytic method , if cost of production of 10 L of oxygen at STP
chemistry
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Aug 14, 2017
by
rajukeesari30
0
answers
what is reverse osmosis
chemistry
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Aug 14, 2017
by
rajukeesari30
1
answer
Vapour density of a metal chloride is 77. The equivalent weight of metal
chemistry
asked
Aug 13, 2017
by
tarunupadhyay563
1
answer
Phenol dimerises in benzene having van't Hoff factor 0.54. what is the degr
chemistry
asked
Aug 13, 2017
by
9716991207r
1
answer
Structure of a mixed oxide is cubic closed packing. The cubic unit cell og
chemistry
asked
Aug 13, 2017
by
barshaghosh127
1
answer
Total number of neutron in 8.8 gm of CO2
chemistry
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Aug 13, 2017
by
rashidewangan121
0
answers
For the reaction :A+2B→C+3D, 5 mole of A and 8 mole of B will produce
chemistry
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Aug 13, 2017
by
tanishqsingh1507
1
answer
In I3 ¯, Lewis Base is what?
chemistry
asked
Aug 13, 2017
by
himakshi9116927827
1
answer
In I3¯, Lewis Base is
chemistry
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Aug 13, 2017
by
himakshi9116927827
1
answer
0.2 faraday charge is passed in 1 litre solution containing 0.1 molar Fe+3
chemistry
asked
Aug 13, 2017
by
rajukeesari30
1
answer
The pH of 0.5 L of 1.0M NaCl after the electrolysis for 965 s using 5.0 A c
chemistry
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Aug 13, 2017
by
rajukeesari30
0
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The time required to remove electrolytically one half from 0.2 litres of 1
chemistry
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Aug 13, 2017
by
rajukeesari30
0
answers
7.5 gram of a gas occupy 5.6lbof volume at stp.the gas is
chemistry
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Aug 13, 2017
by
tanishqsingh1507
0
answers
A compound has ZnS structure and radius of the cation is 22.5pm.what is the
chemistry
asked
Aug 12, 2017
by
samridhigupta505
0
answers
The vapour pressure of water is 23.75 mmHg at 300 k temperature of 10% of u
chemistry
asked
Aug 12, 2017
by
bishtshudhanshu5
1
answer
Identify Z in the following sequence Ethanol—x in the presence of pBr3...
chemistry
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Aug 12, 2017
by
sairamyadla1970
0
answers
Plz explain spherical nodes in atomic structure and it's representation in
chemistry
asked
Aug 11, 2017
by
satyabrata50535
0
answers
Find out the no. Of atoms per unit cell in fcc structure having only single
chemistry
asked
Aug 11, 2017
by
mmanishrao564
1
answer
KCL and NaCl has fcc lattice calculate the ratio of density of NaCl to that
chemistry
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Aug 11, 2017
by
ami.chatur10
0
answers
The average salinity of sea water is
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class 7
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
In an atomic explosion, enormous energy is released which is due to
cbsc
class 7
olympiad
science
chemistry
t4
asked
Aug 11, 2017
by
meena.p
0
answers
Which of the following is a protein?
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class 7
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
The solution which do not change the colour of either red/blue litmus are known as
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class 7
olympiad
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
If 1g of hydrogen is mixed with 8 g of oxygen they water produced will be
cbsc
class 7
olympiad
science
chemistry
t4
asked
Aug 11, 2017
by
meena.p
1
answer
A gas which is used as cooling agent is
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class 7
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chemistry
t4
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Aug 11, 2017
by
meena.p
2
answers
Non stick cooking utensils are coated with
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chemistry
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Aug 11, 2017
by
meena.p
1
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The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
cbsc
class 7
olympiad
science
chemistry
t4
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Aug 11, 2017
by
meena.p
1
answer
When an iron nail gets rusted, iron oxide is formed
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class 7
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
What do the letters pH stand for?
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
Petroleum, gasoline, kerosene, diesel, paraffin wax are yielded on fractional distillation of
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class 7
olympiad
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chemistry
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Aug 11, 2017
by
meena.p
1
answer
Name the chemical used to test the presence of $CO_2$ in exhaled air.
cbsc
class 7
olympiad
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chemistry
t4
asked
Aug 11, 2017
by
meena.p
2
answers
Washing soda is the common name for
cbsc
class 7
olympiad
science
chemistry
t4
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Aug 11, 2017
by
meena.p
2
answers
In the manufacture of safety matches, which of the following materials are used to coat the two sides of match boxes? <br>1. Yellow phosphorus <br>2. Glue <br>3. Glass powder <br> 4. Red phosphorus
cbsc
class 7
olympiad
science
chemistry
t4
asked
Aug 11, 2017
by
meena.p
1
answer
A solute disappears when it is added to a
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chemistry
t4
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Aug 11, 2017
by
meena.p
3
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