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Four identical bulbs are connected to a circuit as shown in the given figure. Due to fluctuations in the voltage, the bulb B₃ blows off.

(A voltmeter measures voltage and it allows almost no current to pass through it.) Now consider the following statements.
I. Reading of the voltmeter V₁, after the blowing off is 20 V.
II. Reading of the voltmeter V₂, after the blowing off is zero.
III. Reading of voltmeter V₁, before the blowing off is 4 V.
IV. Reading of voltmeter V₂, before the blowing off is 5 V.
The incorrect statements are

AII and III only
BI, II and III only
CII, III and IV only
DI and III only.

Which of the following mixtures can be separated easily into two groups with the help of a magnet?

AToothpicks and matchsticks
BIron nails and steel needles
CIron nails and sugar cubes
DShredded paper and fallen leaves

Three bulbs P, Q and R are connected as shown in the given figure. The bulbs Q and R are identical. If the bulb R gets fused, then


ABrightness of both the bulbs P and Q will increase
BBrightness of both the bulbs P and Q will decrease
CBrightness of the bulb P decreases and that of bulb Q increases
DNone of the bulbs will glow.

Which of the following rocks are formed by the deposition of small fragments of rocks within water bodies, like river, lake and sea?

A Granite
B Obsidian
C Shale
D None of these

Select the correct match.
(i) Cotton - Retting
(ii) Jute - Ginning
(iii) Sliver - Combing
(iv) Spinning - Takli
(v) Knitting - Hand spindle
(vi) Weaving - Charkha

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

Which of the following is the common characteristic among the animals shown in the given box?


AThey are warm-blooded animals.
BThey feed on other living things.
CThey hatch from eggs.
DThey cannot fly.

Study the given flow chart and select the option that correctly identifies P, Q and R.

Refer to the given figures and select the incorrect statement regarding them.


AZ is an organ that receives the sperm which fertilises ovum in X.
BSecretions of both Q and Y help in development of male and female gametes, respectively.
CBoth P and W secrete hormones that control development of secondary sexual characters in males and females, respectively.
DR is an erectile organ that releases its contents into Z which also serves as birth canal during parturition.

Select the correct statement among the following.

A The European stork travels from Europe to Africa every summer.
B Arctic tern travels the longest distance among the migratory birds.
C Whales travel to cold water for reproduction and warmer water for feeding.
D Butterflies have short lifespan thus they do not migrate.

Read the given paragraph.
X and Y are the two planets of our Solar System. X is the hottest planet and is often referred to as Morning or Evening star. Surface of Y is covered by red dust so it appears red and is often referred to as Red planet.
Identify planets X and Y and select the correct option regarding them.

A X has one moon whereas Y has sixty two moons.
B Y is an inner planet made up of rocks and iron whereas X is an outer planet made up of gases.
C Indian name of X is Shukra whereas that of Y is Mangal.
D Both X and Y have rings around them but Y is the fastest spinning planet.