Which of the following scales are not linear in nature?
A I only
B II & III
C II only
D I & II
Few processes are given below along with one word used for the change involved. Which of the given terms does not match with the process?
A The perfume from the bottle that you left open last evening was empty in the morning. - Evaporation
B You put a lid on the cup containing hot tea, the inside of the lid gets wet. - Condensation
C You took out few ice cubes from the freezer and put in a glass. After some time, there was only water, no ice. - Sublimation
D The sweetened milk which you kept in the freezer last night has become ice cream now. - Freezing
Search for C and then see
Which of the following mirrors is/are used in solar cooker?
DBoth A and B
Why cant we use plane mirrors ,because this will distribute light equally instead a Concave mirror will focus light at one point.
Which diagram best represents the path taken by a ray of monochromatic light as it passes from air through the materials shown?
The graph shows Gaurav's marks for
Mathematics. If Gaurav's total score was
336, how many more marks did he score
in class test than in first term?
his marks in class test are not given. how can we find the answer ?
Name of some fibres can be obtained by using the letters given in the following box.
Which of the following objects CANNOT be made using only these fibres?
DBoth A and C
Is it D or C
Which one of the following facts provides the best evidence that matter may exist as tiny particles which can move at random?
A A drop of oil forms a very thin layer on the surface of water.
B Most metals conduct electricity.
C People in an enclosed space soon notice when medicated oil is being used
D A quantity of air can be compressed into a much smaller volume.
The table below shows the amount of water used by 4 different families in April, May, June and July. All 4 families watched a water conservation (save water) programme in May. Which family is likely to have understood the reason behind conservation of water?
(A) Family 1
(B) Family 2
(C) Family 3
kindly give explanation of this question
Shruti in an experiment, put a healthy, green plant in different conditions during a day, at different times P, Q and R. The rate of oxygen absorbed or released by this plant is shown in the given graph.
Which of the following assumptions can be made about this experiment?
AAt time P, that plant was put in a dark cupboard.
BAt time Q, plant is not respiring because, no oxygen is being taken up.
CAt time Q, the plant was moved to a dark room.
DAt time R, the plant was put in a well lighted place.
The answer given by Olympiad trainer is B but We all know that plants respire all the time. May I know the right answer