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Class-IX Preparation for ICSE

(23 Posts)

This thread is dedicated to preparation for Class-IX of ICSE

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
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Apoorva
Shared from Study of Gas Laws - 2 on Apr 22, 2020 2:59 PM

What will be the decrease in volume when 60 cm3 gas at 27°C is cooled to 12°C? (Pressure remains constant.)

 
57 cm3
26.6 cm3
5 cm3
3 cm3
Please type your answer before submitting.

V/t =const 60/300=v/285 v=60*285/300 v=57

Aryan Bhatt
Shared from ICSE (Class- IX) on Jan 05, 2020 4:24 PM

Which of the following processes does not take place through osmosis?

 
Preparation of food in plants
The opening and closing of stomata
Turgidity in plants
Absorbtion of water by roots
Please type your answer before submitting.

When the water potential of the adjacent cells is lower than that in the cell sap of the guard cells, water molecules move out of the guard cells into the adjacent cells by osmosis. When this happens, the guard cells become plasmolysed which in turn causes the stoma to close

Lokesh
Posted on Jan 10, 2019 10:45 PM

What is called hydro metre

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Hydrometer is an instrument which is used to measure relative density of liquids

Tatvik Sinha
Shared from Floatations on Dec 18, 2018 7:49 PM

When a body is weighed in a liquid, the loss in the weight of the body is equal to

 
weight of the liquid displaced by the body
difference in weight of the body in air and liquid
upthrust of the liquid on the body
All of above
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Wrong . as the object is immersed in a fluid not in water

Pradipta Chattopadhyay
Shared from Logarithms on Jun 28, 2017 9:47 PM

If log xy = log x – log y, then which of the following options must be true?

 
x = y
x = 1
y = 1
xy = 1
y = 2
Please type your answer before submitting.

Xy=1