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Subject: Science, asked on on 4/2/13
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Question 1

Two cylindrical containers with different base areas are filled with equal volumes of water. The pressure at the base of the containers is same for both of them.
A) True
B) False

Question 2

A group of students are asked to move a massive rectangular block. In the first attempt, they drag it. They then moveit by placing it on circular logs. The students found it easierto move the massive rectangular block on circular logs.
A) True
B) False

Question 3

The approximate value of speed of sound in glass is ____ m/s.
A) 5000
B) 343
C) 1452
D) 1498

Question 4

For electroplating gold on a copper bangle, the copper bangle is connected to the negative electrode.
A) True
B) False

Question 5

The ____ uses two plane mirror strips, each of which is kept inclined at 45o to the axis of the tube.
A) periscope
B) telescope
C) microscope
D) photographic camera

Question 6

Fruits stored in ploythene bags get decomposed quickly because ____.
A) polythene encourages growth of bacteria
B) of the air present in the bag
C) the moisture generated in the bag does not escape
D) ethene increases the rate of ripenening of the fruit

Question 7

Sulphur, when heated, melts and then burns with a blue flame. If the gas produced in the process is dissolved in water, it forms ____.
A) sulphur trioxide
B) sulphurous acid
C) sulphur dioxide
D) sulphuric acid

Question 8

The invisible zone of a candle flame does not contain carbon.
A) True
B) False

Question 9

Which of the following does not contribute to nitrogen availability in the soil?
A) Decay of organic matter
B) Cyanobacteria
C) Nostoc
D) Rhizobium

Question 10

Which of the following is responsible for transporting water from the root to different parts of a plant?
A) Stomata
B) Phloem
C) Xylem
D) Veins

pls be fast

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