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Recent questions tagged cbsc
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The gas usually filled in electric bulb is —
cbsc
class 8
olympiad
science
chemistry
t6
asked
Aug 23, 2017
by
meena.p
1
answer
Most soluble in water is —
cbsc
class 8
olympiad
science
chemistry
t6
asked
Aug 23, 2017
by
meena.p
1
answer
The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
Which of the following non-metals react and catches fire on exposure to air ?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
Greenhouse effect is
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
When we heat water in a paper bowl over a candle, the paper does not catch fire because
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
A substance which cannot be broken down further by chemical reactions, by cooling, heating, or by electrolysis, is called ______
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
Fossils are the
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 23, 2017
by
meena.p
1
answer
Which one of the following is non metal?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
The material similar to silk in appearance is
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following metals is the most reactive metal?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following areas has recently shown good reserves of natural gas?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
A flame has how many zones?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following is a bad conductor of electricity?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
How much nitrogen is present in air?
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
Gobar gas contains mainly —
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
The 4 R Principle is a
cbsc
class 8
olympiad
science
chemistry
t5
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following is not a combustible substance ?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Dead organisms are transformed into petroleum & natural gas in
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
What is the product when sulphur reacts with oxygen?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following property is not responsible for copper to be used as electrical conduction wires?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Some basic steps are needed in agricultural practice. Which of the following given asA, B, C, D is the right sequence?<br>(1) Preparation of the soil <br> (2) Harvesting <br> (3) Irrigation <br>(4) Broadcasting <br> (5) Tilling <br>(6) Weeding <br>(7) Manuring.
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Which material is used for making bottles and jars?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
In the following Table some substances are given in Column I. In Column II some uses are given. Match the items in column I with those in Column II.
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
0
answers
Which of the following is an inflammatory substance?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Which material is used for making the central rod in an electric cell?
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Ganga Action Plan is associated with
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
A person caught fire on clothes is wrapped with blanket because
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Naphthalene balls used to repel moth and insect is derived from
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The green material is a mixture of
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Polythene and PVC are examples of
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
The ratio of pure gold in 18 carat gold is —
cbsc
class 8
olympiad
science
chemistry
t4
asked
Aug 22, 2017
by
meena.p
1
answer
Which of the following react with cold water vigorously?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following is not a way to conserve water?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which gas; obtained from natural gas; is used for manufacturing urea?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
0
answers
Which of the following represents the correct match for items in Column A with those in Column B.
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which is a thermosetting plastic?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Choose the incorrect statement from the following.A good fuel is one which
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
When sulphur dioxide is dissolve in water then-
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
CNG is
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following gases is lighter than air ?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following alloys is used for making magnets ?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following is not true?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which scientist was the first to show electrolysis of water?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
What should be the minimum age for the remains of organism to be categorized as fossil?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following statements is correct?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Plastic bags are generally made from which plastic?
cbsc
class 8
olympiad
science
chemistry
t3
asked
Aug 21, 2017
by
meena.p
1
answer
Which of the following metals does not react with concentrated hydrochloric acid?
cbsc
class 8
olympiad
science
chemistry
t2
asked
Aug 21, 2017
by
meena.p
1
answer
Water has maximum density at —
cbsc
class 8
olympiad
science
chemistry
t2
asked
Aug 21, 2017
by
meena.p
1
answer
In which of the following activities Silicon Carbide is used ?
cbsc
class 8
olympiad
science
chemistry
t2
asked
Aug 21, 2017
by
meena.p
1
answer
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