Which of the following statements are correct?
(i) Human body is a good conductor of electricity.
(ii) The air gap surrounding an electric circuit acts as a conductor.
(iii) Silver conducts electricity better than any other metal.
(iv) When electricity lights up a bulb, no heat is produced.
A (i) and (ii)
B (iii) and (iv)
C (i) and (iii)
D (ii) and (iii)
Can someone explain how the human body is a good conductor of electricity?
Label the dry cell in the correct order.
A (i) Carbon and Manganese dioxide mixture, (ii) Carbon rod, (iii) Ammonium chloride
B (i) Carbon rod, (ii) Ammonium chloride, (iii) Zinc container
C (i) Ammonium chloride, (ii) Zinc container, (iii) Carbon rod
D (i) Zinc container, (ii) Carbon rod, (iii) Carbon and Manganese dioxide mixture
The correct answer is C as the part labeled (i) is ammonium chloride, (ii) is zinc container and (iii) is carbon rod.
Read the given statements and select the correct option.
Statement 1 : Biodegradable wastes are also known as organic wastes.
Statement 2 : The origin of biodegradable wastes are living organisms.
(A) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
(B) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
(C) Statement 1 is correct but statement 2 is incorrect.
(D) Both statements 1 and 2 are incorrect.
Refer the given figure showing vertical section of
a flower and select the correct option regarding its
A If 'h' is removed at bud stage of flower, flower gets damaged.
B During self pollination, the pollen grains are transferred from 'd' to 'e' of the same flower or a different flower in the same plant.
C 'g' contains a very tiny egg which the pollen fertilizes.
D Both a and c.
Study the flow chart given below.
What can be placed at P, Q, R and S?
|A||Window pane||Ceramic tile||Iron rod||Spectacle lens|
|B||Iron rod||Rubber band||Ceramic tile||Spectacle lens|
|C||Iron rod||Rubber band||Window pane||Ceramic tile|
|D||Ceramic tile||Window pane||Rubber band||Iron rod|
How can a window pane stretched ?
In order to grow a new money plant, you should cut the plant at the place indicated by line ______.
Read the given paragraph where few words have been italicised. Rain is our main source of water. Water vapours present in the air precipitate to form clouds. When rain falls, some of it condenses back to atmosphere and some passes through the soil upto the level of non-porous rocks beneath to form groundwater. Groundwater may come out at some places to form water table. Select the incorrect option regarding this.
APrecipitate should be replaced with condense.
BCondenses should be replaced with evaporates.
CGroundwater should be replaced with run-off.
DWater table should be replaced with spring.
Refer to the given figure with its parts labelled as P, Q, R and S. Which of the following statements are correct regarding this?
(i) Plants like carrot, radish and turnip store their food in R.
(ii) Q and P are modified into tendrils in plants like grapevine and Gloriosa respectively, to help them give support.
(iii) In cactus and aloe vera P is reduced to spines and Q stores water and mucilage.
(iv) In onion and beetroot, S and Q are modified respectively to store food.
(v) In ginger and potato, Q is underground and modified to store food.
A(i), (ii) and (iii) only B.
B(i), (ii) and (v) only
C(iii) and (iv) only
D(iii), (iv) and (v) only