Which of the following steps is/are incorrect while
constructing an angle of 120°?
Step 1 : Draw any line MN and take a point C on line.
Step 2 : Place the pointer of the compass at C and draw an arc of convenient radius which cuts the line at A.
Step 3 : Without disturbing the radius on the compass draw an arc with A as centre which cuts the first arc at B.
Step 4 : Again without disturbing the radius on the compass and with M as centre, draw an arc with O which cuts the first arc at C.
Step 5 : Join OA. ∠ OAN is the required angle of measure 120°.
A Only step 1
B Both step 4 and step 5
C Only step 5
D Only step 2
One way animals usually respond to a sudden drop in temperature is by
(A) Lamp L1 will light up when either L2 or L3 are lighted.
(B) Electricity will flow only when all the switches are closed.
(C) Current flowing through L1 and L2 are equal.
(D) Electricity will flow as long as any one switch is closed.
The given figure represents the stomach of ruminants with its four chambers labelled as P, Q, R and S. Which chambers allow grazing animals like sheep, cattle etc. to efficiently digest cellulose, a common carbohydrate in plants and how ?
(A) P, Q, S; these chambers secrete cellulase enzyme.
(B) P and Q; these chambers contain billions of bacteria that digest cellulose.
(C) R and S; these chambers contain billions of bacteria that digest cellulose.
(D) P and Q; these chambers secrete cellulase enzyme.
Observe the picture. Which system(s) of the boy's body is/are involved in helping him to escape?
|(d)||Skeletal system||(e)||Muscular system|
|(f)||Circulatory system||(g)||Respiratory system|
(A) (d) only
(B) (d) and (e)
(C) (d), (e) and (f)
(D) (d), (e), (f) and (g)
Rina puts a magnet near object L. The south pole of the magnet attracts both parts J and K of the object L. Which of the following statements are true ?
1. Object L is made of steel.
2. Object L is made of copper.
3. The north pole of the magnet will attract part J of object L.
4. The north pole of the magnet will attract part K of object L.
(A) 1 and 3
(B) 2 and 4
(C) 1, 3 and 4
(D) 2, 3 and 4
Option D as steel is not as magnetic as copper
Fossil fuels formed over a long period of time because heat and pressure were applied to
A Nitrogen mixed in the water
B Organisms buried in the ground
C Carbon filtered through limestone
D Bacteria on top of the mud
This question didn't seem word perfect, that is the options were kind of diffrent from the actuall answer