Sonia, a Class VIII student conducted an experiment where she took some metals in test tubes containing certain salt solutions.
In which of the test tube, the colour of the solution had changed?
Can anyone provide the explanation
Which of the following organs is bean-shaped ?
you can get confused very very easily
The graphs below show the relationship between two organisms.
(A) What is the relationship between the two organisms P and Q?
(B) During which period do you think organism M was introduced?
(C) What new food chain forms between organisms P, Q and M?
This is quite difficult.
Identify the part labelled as 'X' in the given figure.
B Germinal disc
D None of these
It is supposed to be YOLK.
A copper vessel exposed to moist air for a long time is shown in figure I and sulphur powder is burnt in oxygen as shown in figure II.
1, 2, 3 and 4 are respectively
ACuO, CO2, SO2, H2SO3
BCuCO3, Cu(OH)2, H2SO3, SO2
CCu, CuO, H2S, H2SO4
DCu(OH)2, CuCO3, SO2, H2SO3
Red litmus turns blue in a basic or alkaline solution. And red litmus turns blue in a acidic solution.(Please explain this.Copy pasted from the solution.)
Match the column I with column II and select the correct option from the given codes.
A(A) - (iv), (B) - (i), (C) - (v), (D) - (iii), (E) - (ii)
B(A) - (i), (B) - (ii), (C) - (iii), (D) - (iv), (E) - (v)
C(A) - (v), (B) - (iv), (C) - (iii), (D) - (ii), (E) - (i)
D(A) - (iv), (B) - (i), (C) - (ii), (D) - (v), (E) - (iii)
A car is accelerating on a road in the direction shown in the figure. The tyre shown is connected to the engine. In which direction is the force of friction exerted by the road on the tyre?
Which one of the following actions makes friction an advantage?
APushing a heavy box across the room
BSailing across a river in strong wind
CRunning on a wet floor
DKicking a football while playing
Option c) does not seems to be the only and most reasonable answer