Mayank carried out an experiment as shown below to see how fast water flows out through different soil types in a filter funnel.
He collected soil from three different locations X, Y and Z. For each soil sample, 100 mL of water was poured into the filter funnel. He counted the drops of water that passed through the soil and into the beaker below, in one minute. He tabulated his results as shown below.
Which of the following statements is correct based on the results tabulated by him?
AWater lily will grow best in soil type Y and cactus will grow best in soil Z.
BWater lily will grow best in soil type Z and banyan plant will grow best in soil X.
CSoil Z is found in deserts and hill tops.
DSoil Y has lot of humus.
Which phase of Moon is shown by 'X' in the given figure?
The sun's position should be shown to make the question clear. How does one know the shaded portion is the visible moon or the white portion?
Look at the two objects below.
From the following statements, pick out those which are true.
1. Cotton is heavier than iron.
2. Both the objects have the same volume.
3. Both the objects are solid.
4. Both the objects are waterproof.
5. Both the objects have same mass.
A 1 and 2
B 3 and 5
C 4 and 5
D 3 and 4
Fill in the blanks with the most appropriate option.
If a guitar string is pulled strongly, its amplitude of vibration (i) and the note heard is (ii). If it is pulled lightly, its amplitude of vibration (iii) and the note heard is (iv).
Read the given paragraph and answer the following questions.
Two metal rulers of lengths 30 cm and 60 cm are kept in such a manner that a 30 cm ruler extends about 15 cm over the edge and a 60 cm ruler extends about 30 cm over the edge. Both the ends are flicked. Which of the following statements is correct regarding this?
(i) The metal ruler of length 30 cm is able to vibrate slower.
(ii) The metal ruler of length 30 cm produces a high pitch sound.
(iii) The metal ruler of length 60 cm is able to vibrate faster.
(iv) The metal ruler of length 60 cm produces a low pitch sound.
A Only (i) and (iii) are correct.
B Only (ii) and (iv) are correct.
C Only (i) and (iv) are correct.
D Only (ii) and (iii) are correct.
There are two bottles of glass, one bottle is two third filled with water and another bottle is filled one third with water. When we blow across the mouth of each bottle, then
(i) The bottle with the less air in it gives the note of higher pitch
(ii) The shorter the air column, the higher the pitch of the note produced.
A Both (i) and (ii) are correct and (ii) is the correct explanation of (i).
B Both (i) and (ii) are correct but (ii) is not the correct explanation of (i).
C Only (i) is correct.
D Only (ii) is correct.
Study the given figure of a plant. Which of the following adaptations are shown by this plant?
(i) Leaves are reduced to spines.
(ii) Stem is green and spongy.
(iii) Roots are very long and reach deep into the soil for absorbing water.
A(i) and (ii) only
D(i), (ii) and (iii)
cactus has shallow roots to absorb the water which falls on the surface whenever it rains.