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Study the given flow chart carefully. Which of the following correctly identifies P, Q and R?

Consider a light steel bar and a light iron bar which are attracted to a magnet as shown in the given figure. What will possibly happen when the magnet is removed?


AThe steel and iron bars repel each.
BBoth steel and iron bars lose their magnetism.
CSteel bar retains its magnetism and iron bar loses its magnetism.
DIron bar retains its magnetism and steel bar loses its magnetism.

There are 18 girls and 24 boys in a class. 2/3 of the girls and 5/12 of the boys play the piano. Find the ratio of the number of girls who play the piano to the total number of pupils who do not play the piano in the class.

A 3 : 7
B 3 : 5
C 5 : 6
D 3 : 4

The layer of Earth which is molten and is mainly made of iron and nickle is _______.

ACrust
BMantle
COuter core
DIner core

The diagram shows a destarched, variegated leaf, partly covered by black paper. The plant is placed in bright light for several hours.
Four discs were then cut from the leaf in the positions (1 - 4) as shown in the figure and were tested for starch. Which disc contains starch?


A1 only
B1 and 2 only
C2 only
D3 and 4 only

Properties of a few substances are given as:
W : Gets powdered easily
X : Does not mix with water
Y : Can be beaten into thin sheets
Z : Partially allows light to pass through
W, X, Y and Z could be respectively

AChalk, butter, gold and tracing paper
BGlass, honey, sulphur and water
CPaper, Rubber band, wool and steel
DSugar, ink, paper and copper.

A book and a wooden block of similar size are kept in same position in front of a light source as shown in figure. Which of the following is correct regarding the shadow of the objects?


ABoth the shadows are equal in size.
BShadow of the book is larger than of block.
CShadow of the block is larger than of book.
DThe image distance for book will be greater than for wooden block.

Renu observed waxing Crescent Moon on 28^th September. Which phases of Moon will she observe on 5^th October and 12^th October?

A
B
C
D

Select the incorrect statement(s).
(i) The bicuspid valve guards the opening of right atrium into right ventricles.
(ii) The semilunar valves are present at the base of pulmonary aorta and dorsal aorta.
(iii) Pulmonary vein carries oxygenated blood from the lungs to the heart.
(iv) The right ventricle is the largest heart chamber.

A (i) and (ii) only
B (i) and (iv) only
C (ii) and (iv) only
D (ii) and (iii) only

Which of the following animals is a rodent?

ASheep
BWolf
CHyena
DSquirrel