User Forum

The given figure shows a tool which is used to convert wool fleece into narrow untwisted fibres called slivers. This tool is used in the process of _____ of wool.


A Shearing
B Scouring
C Carding
D Sorting

A man who weighs 670 N runs the first 7.0 m in 1.6 s, starting from rest and accelerating uniformly. What average power does the man generate during 1.6 s time interval? (Take g = 10 m s^-2)

A 3.2 kW
B 1.6 kW
C 0.9 kW
D 16 kW

Read the following statements.
(A) In India, rain is mainly brought by two kinds of humidity-laden winds, _____ and _____.
(B) Scientists who study and predict weather are known as _____.
(C) The climate in Kerala is _____ and _____.
Select the option which correctly fills the blanks in any two of these statements.

A (B) Geologists; (C) Hot, Dry
B (A) South-West monsoon, North-East monsoon; (C) Hot, Wet
C (A) South-East monsoon, North-West monsoon; (B) Meteorologists
D (A) South-East monsoon, North-West monsoon; (B) Geologists

Which of the following statements is incorrect regarding the female reproductive system?

A If the ovum released from the ovaries is not fertilised, then it is shed alongwith blood during menstruation.
B Menopause occurs in the females at an age of 45–50 years.
C Vagina of female reproductive system is a primary sex organ.
D Development of breasts in females is the accessory sex character.

What would happen if the Earth did not rotate on its axis?

A All winds would blow curved and deflected at equator only.
B All winds would not blow curved and deflected at poles only.
C All winds would blow straight from high pressure to low pressure area and die when the pressure equalised.
D All winds would blow straight from low pressure to high pressure area and die when the pressure is equalised.

Ram and Shyam have performed the experiment to separate sugar from water, as shown in the figures.

Which of the following statements are incorrect?
I. Method 1 is slower than method 2.
II. Method 2 leads to the decomposition of sugar to carbon.
III. Method 1 is more appropriate than method 2.
IV. Method 2 is slow but pure sugar is obtained without getting decomposed.

A II and III Only
B I, II and III Only
C III and IV Only
D II and IV Only

Refer to the given flow chart and select the correct option regarding P, Q and R.


A P can be nylon but R can never be silk.
B Q can be rayon but P can never be jute.
C R can be silk and P can be polyester.
D P can be nylon or rayon and R can be jute or silk.

Read the given paragraph where few words/phrases have been italicised. Vitamin C keeps our reproductive system healthy and is abundantly found in lemon and wheat germ. Vitamin E is present in peanut butter and oranges. Its deficiency leads to scurvy. Minerals like sodium and potassium are required for healthy bones and teeth whereas calcium maintains body's water balance. Select the correct statement regarding this.

A C should be replaced with B₁₂ whereas E should be replaced with A.
B Positions of lemon and peanut butter should be interchanged whereas sodium and potassium should be replaced by calcium and phosphorus respectively.
C Positions of calcium and sodium should be interchanged whereas E should be replaced with D.
D Sodium and potassium are correctly mentioned hence should not be replaced but calcium should be replaced with iron.

A bar magnet gets broken into four pieces E, F, G and H.

Which of the following options shows the correct poles in broken pieces ?

A
B
C
D

Hot milk is poured into four bowls as shown in figure. In which bowl the temperature of milk will drop at fastest rate?

A
B
C
D