1. In which direction does he move the lens to focus the flame on the screen?
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1
|
3692
|
April 5, 2019
|
Mention the essential material (chemicals) to prepare soap in the laboratory
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1
|
976
|
April 5, 2019
|
In the experimental set up for determination of resistance of a given resistor
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1
|
462
|
April 5, 2019
|
A Zinc granule changes the colour of ferrous sulphate and an iron nail changes the blue colour of copper sulphate
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1
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1342
|
April 5, 2019
|
With the help of labelled diagram, discuss the mechanism of respiration in human beings
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1
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10350
|
April 5, 2019
|
Explain the given reactions with the examples: 1. Hydrogenation reaction
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1
|
2268
|
April 5, 2019
|
1. How do we classify elements?
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1
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421
|
April 5, 2019
|
Give the steps involved in the extraction of metals of low and medium reactivity
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1
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6409
|
April 5, 2019
|
What are the different methods of contraception?
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1
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3848
|
April 5, 2019
|
1. How can you contribute as an individual or make a difference to the management of:
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1
|
1447
|
April 5, 2019
|
Energy from various sources is considered to have been derived from the Sun. Do you agree?
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1
|
545
|
April 5, 2019
|
What does the direction of thumb indicate in the right-hand thumb rule?
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1
|
1576
|
April 5, 2019
|
Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel
|
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1
|
1700
|
April 5, 2019
|
A 14 year old student is not able to see clearly the question’s 1. Name the defect of vision he is suffering from?
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1
|
2484
|
April 5, 2019
|
Name the four parts labelled as a, b, c and d in given diagram and write their functions
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1
|
2190
|
April 5, 2019
|
What are tropic movements? Name the types of tropic movements in plants
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1
|
1028
|
April 5, 2019
|
What are the differences between the transport of materials in xylem and phloem?
|
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1
|
5611
|
April 5, 2019
|
Using this table, explain why 1. Li and Na are considered as active metals
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|
1
|
5018
|
April 5, 2019
|
A substance ‘X’ used in the kitchen for making tasty pakoras and is also an ingredient of antacid
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1
|
5710
|
April 5, 2019
|
An old person is unable to see clearly nearby objects. (a) What defect of vision is he suffering from?
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1
|
3350
|
April 5, 2019
|
Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor
|
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1
|
5040
|
April 5, 2019
|
An object of height 4.0 cm is placed at a distance of 30 cm form the optical centre
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1
|
8671
|
April 5, 2019
|
Draw diagrams of what he observes (in proper squence)
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1
|
446
|
April 5, 2019
|
List the steps of preparation of temporary mount of a leaf peel to observe stomata
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1
|
5285
|
April 5, 2019
|
When a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube?
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1
|
986
|
April 5, 2019
|
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions
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1
|
1327
|
April 5, 2019
|
Explain the function of the following parts of an electric motor. (i) Armature
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1
|
3242
|
April 5, 2019
|
1. Mention any two components of blood
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1
|
3275
|
April 5, 2019
|
(a) Write the steps involved in the extraction of pure metals
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|
1
|
12436
|
April 5, 2019
|
What is a dam? Why do we seek to build large dams?
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1
|
1436
|
April 5, 2019
|