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Recent questions tagged chemistry
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Water can be separated from mud by help of
cbsc
class 7
olympiad
science
chemistry
t5
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Aug 17, 2017
by
meena.p
1
answer
Movement of particles from an area of higher concentration to an area of lower concentration is called
cbsc
class 7
olympiad
science
chemistry
t5
asked
Aug 17, 2017
by
meena.p
1
answer
Element which is filled in thermometer due to its temperature sensitivity is called
cbsc
class 7
olympiad
science
chemistry
t5
asked
Aug 17, 2017
by
meena.p
1
answer
If carbon dioxide is passed through limewater it will form
cbsc
class 7
olympiad
science
chemistry
t5
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Aug 17, 2017
by
meena.p
1
answer
Actinides are the elements with atomic numbers from
cbsc
class 7
olympiad
science
chemistry
t5
asked
Aug 17, 2017
by
meena.p
1
answer
Soda water contains
cbsc
class 7
olympiad
science
chemistry
t5
asked
Aug 17, 2017
by
meena.p
1
answer
how much urea should be dissolved in 50g of water,so that its vapour pressu
chemistry
asked
Aug 17, 2017
by
randyortan123.ro
1
answer
when concentration of a salt solution is invreased
chemistry
asked
Aug 16, 2017
by
sohamlikes10
1
answer
A liquid cannot be
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
All matter is made up of tiny discrete particles too small to be seen was hypothesis of
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Which of the following statements is not correct?
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Find the natural indicator from the following
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Neutral solutions which do not change the colour of either red/blue litmus are known as
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Paper is manufactured by
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Jatin prepared the following set-ups to 'make rain'. The same amount of water was used for each set-up. Study them carefully to find out which set-up will form the most 'rain'?
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
0
answers
Water is a good solvent of ionic salts because
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
A substance which cannot be broken in to simpler substances further by any chemical reaction is called
cbsc
class 7
olympiad
science
chemistry
t8
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Aug 16, 2017
by
meena.p
1
answer
If both water and carbon dioxide is given to plant still it will not prepare its own food if there is lack of
cbsc
class 7
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science
chemistry
t8
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Aug 16, 2017
by
meena.p
1
answer
Atomic number of sodium is 11 and its atomic mass is 23, so number of protons and neutrons in an atom of sodium is
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Smallest particle of Carbon dioxide consists of
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
Which of the following is the best heat insulator
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
1
answer
The filament of an electric bulb is made of
cbsc
class 7
olympiad
science
chemistry
t8
asked
Aug 16, 2017
by
meena.p
0
answers
More accurate and quick measure of pH value is done by
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Nitrogen helps in making of nitrogen based
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Shreya made a cup of hot tea and put a metal spoon in the cup so that the tea would cool down faster. Which of the following statements best describes the cooling of tea faster?
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
In an atomic nucleus, neutrons and protons are held together by
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Sodium metal is kept under
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
What is condensation?
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Which of the following is the best conductor of electricity ?
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Which of the following gases is lighter than air ?
cbsc
class 7
olympiad
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chemistry
t7
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Aug 16, 2017
by
meena.p
1
answer
Parmanent hardness of water may be removed by the addition of —
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Cats eat rats. Rats eat grain. When grain is plentiful, what do you expect to happen?
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Catalytic properties of a substance may be best defined as a phenomenon of ?
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
Large molecules such as polythene and polystyrene contains
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
What will be the ratio of wavelength of 1st line to that of second line of
chemistry
asked
Aug 16, 2017
by
getminakshi18
1
answer
Two students of Class VI have performed the same experiment 'Separation of Sugar' by different methods as shown below: Which of the following statements are correct? <br> I. Method I is faster than method 2. <br> II. Method 2 leads to the decomposition of sugar to carbon. <br> III. Method 2 is more appropriate than method I. <br> IV Method 2 is slow but pure sugar is obtamed without getting decomposed.
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
1
answer
What will be the ratio of wavelength of 1st line to that of second line of
chemistry
asked
Aug 16, 2017
by
getminakshi18
1
answer
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
0
answers
Potassium nitrate is used in
cbsc
class 7
olympiad
science
chemistry
t7
asked
Aug 16, 2017
by
meena.p
0
answers
What will be the ratio of wavelength of 1st line to that of second line of
chemistry
asked
Aug 16, 2017
by
getminakshi18
1
answer
in beo zinc blende structure Mg is introduced in the available tetrahedral
chemistry
asked
Aug 15, 2017
by
pranshu.kas13
1
answer
A copper plate of 10cmx10cm and 0.1 cm thickness is to be plated with silve
chemistry
asked
Aug 15, 2017
by
rajukeesari30
0
answers
what is roults law and osmosis ?
chemistry
asked
Aug 15, 2017
by
rajukeesari30
1
answer
Aniline is stronger than 3 nitroaniline which is stronger than 4 nitro anil
chemistry
asked
Aug 15, 2017
by
anniefaiz55
1
answer
Among the various allotropes of carbon,
cbsc
class 7
olympiad
science
chemistry
t6
asked
Aug 14, 2017
by
meena.p
1
answer
Modern model of atom shows that electrons are outside nucleus in region of high
cbsc
class 7
olympiad
science
chemistry
t6
asked
Aug 14, 2017
by
meena.p
1
answer
Match column I with column 11 and select the correct option from the codes given below. Column - I Column - II (a) Clothing material (i) Nylon (b) Twisted fibre (ii) Fabric (c) Synthetic fibre (iii)Yarn (d) Animal fibre (iv) Cotton (e) Plant fibre (v) Silk
cbsc
class 7
olympiad
science
chemistry
t6
asked
Aug 14, 2017
by
meena.p
1
answer
Reema's mother has done some preparations for her Birthday Party. Which of the folllowing changes can be reversed
cbsc
class 7
olympiad
science
chemistry
t6
asked
Aug 14, 2017
by
meena.p
1
answer
Lactic acid is found in
cbsc
class 7
olympiad
science
chemistry
t6
asked
Aug 14, 2017
by
meena.p
1
answer
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