Ravi: A pure substance is made up of only one kind of molecules. Rajeev: A pure substance is made up of various kinds of molecules. Who is correct?
A)
Both are correct
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B)
Both are incorrect
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C)
Ravi
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D)
Rajeev
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E)
None of these
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A body moves along the path PQR. What is the displacement of the body?
A)
a
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B)
\[a-2\]
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C)
2a
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D)
Distance from P to R
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E)
None of these
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In the first step of respiration, breathing in and out of air by lungs take place, what happens during the second step?
A)
Energy is produced.
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B)
Cellular respiration takes place.
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C)
Burning of food with the help of the oxygen.
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D)
All of these
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E)
None of these
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Presence of huge quantity of water vapour, methane, nitrous oxide and carbon dioxide in the atmosphere, which reflect back heat on to the earth surface, produces which one of the following?
A)
Reflection of light
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B)
Green house effect
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C)
Dispersion of light
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D)
All of these
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E)
None of these
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The process for obtaining wool from sheep is given below. Fill the missing steps from the options given below.
A)
Shearing, dying, combing, spinning
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B)
Tonsillitis, sneezing, choking, spinning
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C)
Dying, shearing, sorting, spinning
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D)
Sorting, dying, shearing, spinning
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E)
None of these
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Match the following:
S. No.
Stage
Product
1.
Lama
A.
Silk Fiber
2.
Scouring
B.
Food of Silkworm
3.
Cocoon
C.
Wool Yeilding Animals
4.
Mulberry Leaves
D.
Cleaning fleece of sheep
A)
1 - C, 2 - D, 3 - A, 4 - B
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B)
1 - B, 2 - A, 3 - D, 4 - C
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C)
1 - A, 2 - D, 3 - C, 4 - B
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D)
1 - C, 2 - A, 3 - D, 4 - B
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E)
None of these
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The climate of a place is determined by the statistical observation of past weather data, recorded on day to day basis. Which one of the following is the climate of a place where in less rainfall is recorded throughout the year?
A)
Hot and wet
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B)
Hot and humid
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C)
Hot and dry
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D)
All of these
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E)
None of these
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Which one of the following is the largest planet in the solar system?
A)
Jupiter
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B)
Venus
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C)
Earth
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D)
Neptune
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E)
None of these
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The food produced by plants by the process of photosynthesis is in the form of a sugar. Which one of the following is correct about the chemical formula of sugar is produced as by-product during photosynthesis?
A)
\[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]
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B)
\[{{C}_{5}}{{H}_{2}}\]
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C)
\[{{H}_{12}}{{O}_{6}}\]
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D)
\[{{C}_{6}}{{O}_{6}}\]
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E)
All of these
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Name the elements whose atoms are present in a molecule of iron sulphide (FeS).
A)
Iron and Sodium
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B)
Iron and Silicon
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C)
Iron and Sulphur
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D)
Iron and oxygen
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E)
None of these
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What happens between unlike poles of two magnet?
A)
Repel each other
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B)
Attract each other
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C)
No effect for each other
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D)
Both attract and repel each other
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E)
None of these
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Look at the following equation \[CuS{{O}_{4}}+Zn\to ZnS{{o}_{4}}+Cu.\] The above equation is an example of which one of the following reaction?
A)
Combination reaction
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B)
Decomposition reaction
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C)
Displacement reaction
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D)
Double displacement reaction
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E)
None of these
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Calculate the pressure when a force of 60 N is exerted on an area of 5\[{{m}^{2}}\].
A)
10 pascals
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B)
12 pascals
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C)
16 pascals
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D)
20 pascals
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E)
None of these
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The type of soil suitable for growing paddy is____.
A)
sandy soil
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B)
clayey soil
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C)
loamy soil
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D)
bricks
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E)
None of these
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During exhalation the size of chest cavity ___.
A)
increases
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B)
decreases
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C)
remains the same
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D)
get out of the lungs
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E)
None of these
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In cockroaches air enters the body through ____.
A)
gills
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B)
lungs
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C)
spiracles
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D)
skin
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E)
None of these
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Which one of the following is called universal solvent?
A)
Acid
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B)
Alcohol
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C)
Water
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D)
All of these
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E)
None of these
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Which one of the following is a compound?
A)
Nitrogen
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B)
Water
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C)
Carbon dioxide
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D)
Both [b] and [c]
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E)
None of these
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Lohi and Nali are breeds of:
A)
rabbit
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B)
silk moth
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C)
goat
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D)
sheep
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E)
None of these
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The plant which traps and feeds on insects is:
A)
Cuscuta plant
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B)
China rose
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C)
Pitcher plant
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D)
Rose plant
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E)
None of these
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For how long do the caterpillars eat mulberry leaves?
A)
20 to 30 days
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B)
10 to 15 days
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C)
5 to 10 days
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D)
25 to 30 days
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E)
None of these
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The liquid metal used in a thermometer is:
A)
silver
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B)
mercury
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C)
gold
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D)
copper
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E)
None of these
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