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The given figures show particles of the same matter.
Which of them shows that the matter is coolest?

A
B
C
D

Which of the following statements is false?

A In a compound, elements are always present in a variable ratio.
B Elements and compounds are pure substances.
C Metalloids show properties of metals as well as non metals.
D The constituents of a mixture do not combine chemically with each other.

A small cubical object is placed between centre of curvature and focus of the concave mirror as shown in the given figure.

The correct schematic shape of image of the given object is represented by

A
B
C
D

A set-up is used to determine the focal length of a converging lens.


The object is a triangular opening cut out from a cardboard as observed by the observer as shown in the given figures.
Distance x and y are adjusted such that the observer sees a sharp image formed on the object itself. Focal length of the converging lens is

Ax
By
Cx + y
D2 x

Which of the following statements is incorrect for the given food item?
(i) The ingredients used to prepare this food are obtained from both plant and animal sources.
(ii) The major nutrients in this food are carbohydrates and proteins.
(iii) This food is also a source of vitaminc.
(iv) The ingredient sourced from plants is actually a seed.


A(i) and (ii)
B(iii) only
C(ii) and (iv)
DNone of these

Refer to the given flow chart and select the option that correctly identifies X, Y and Z.

Read the given statements and select the correct option.
Statement 1 : Translocation takes place through the cells of phloem.
Statement 2 : Phloem has elongated cells called vessels through which food is transported.

ABoth statements 1 and 2 are correct.
BStatement 1 is correct but statement 2 is incorrect.
CStatement 1 is incorrect but statement 2 is correct.
DBoth statements 1 and 2 are incorrect.

A ball is thrown upward from the ground with some initial velocity. The values of velocity attained by ball at different instants of time are given in the table.

Select the incorrect statement regarding it.

AThe maximum height attained by the ball is 320 m.
BThe height attained by the ball at 12 s is 160 m.
CThe ball will return to the ground after 16 s.
DAt the end of 16 s, the displacement of the ball is zero.

Which of the following actions/activities are done in the direction of gravitational force?



A1 and 2
B3 and 4
C2, 3 and 4
D1, 2, 3 and 4

Anita set up an experiment as shown below.

Which of the following graphs correctly represents the changes in weights of Visking tubings X and Y with time?

A
B
C
D