Warm water is poured slowly into a beaker of ice cubes as shown here.
What can be observed when the warm water is poured into the beaker?
(1) The ice starts melting.
(2) The glass expands.
(3) The temperature of the ice increases.
(4) The temperature of the warm water decreases.
A1 and 4 only
B2 and 4 only
C1, 3 and 4 only
DAll of these
The glass will not expand.
Ritu has 500 cm3 of oxygen in a small tank and she wants to transfer all of it to another container. Which of the following containers would be able to hold all the oxygen gas?
BQ and R
CP, Q and R
DNone of these
There should be a limit on how much we can compress the gas.Are we confidently saying that 500 cm-cube volume can be filled in a 250 cm-cube cylinder?Well and if we have to, will the cylinder construction remain same?If all the gas in the world can be compressed then why do we have to use big tanks or tankers?
A pile of cubes of equal size is arranged in the form of a block as shown in the figure. If the block is dipped into a bucket filled with red paint, so that only the surfaces of the block get coloured, then how many cubes are coloured on three faces only?
Answer should be 17 cause there are 5 cubes with three faces painted at the top. There are also the 2 corner cubes on the first level that have not been considered in the solution. Pls correct this mistake cause you guys dont correct even a single question. Not expected from you :(
Study the given table.
Select the correct option for (i), (ii), (iii) and (iv).
Arrange the following in the order of increasing mass. (Atomic mass of O = 16 u, Cu = 63 u, N = 14 u)
I. one atom of oxygen
II. one atom of nitrogen
III. 1 × 10-10 mole of oxygen gas
IV. 1 × 10-10 mole of copper
AII < I < III < IV
BI < II < III < IV
CIII < II < IV < I
DIV < II < III < I
answer is option A
Why is Diwali celebrated ?
AOn this day Lord Rama married Sita.
BTo mark the return of Lord Rama to Ayodhya after an exile of fourteen years.
COn this day Lord Rama killed Ravana.
DIt is the birthday of Lord Rama.
I think the answer is C.Someone please tell the correct answer
Refer to the given classification chart.
Which of the following has been grouped INCORRECTLY?