Given figure shows land breeze that blows at night. Which of the following is INCORRECT regarding this?
A Land has higher air pressure than the sea.
B Air blows from high pressure area to low pressure area.
C Hot air above sea rises into atmosphere.
D As Sun sets, sea cools faster than land.
Consider the following statements regarding carbon dioxide.
I. It is produced when an object is burnt.
II. It is consumed by all animals during respiration.
III. It is released by green plants during photosynthesis.
Among the given statements,
A Only I is incorrect
B Only III is incorrect
C Both I and II are incorrect
D Both II and III are incorrect.
Observe the given figure carefully and select the correct statement regarding X, Y and Z.
A X is coke, Y is ammoniacal liquid and Z is methane gas.
B X is a mixture of about 200 substances.
C Z was earlier used for domestic cooking and lighting.
D Y is a good fuel and burns with no smoke.
We need a diminished image of an object on a screen 1 m away from it. This can be achieved by approximately placing a
A Convex mirror of suitable focal length
B Concave mirror of suitable focal length
C Concave lens of focal length less than 0.25 m
D Concave lens of suitable focal length.
Why not D?
When sound wave travels from air into water, how do the frequency, wavelength and speed changes?
Which statement is INCORRECT for sandy soil?
A It has large particles with lots of spaces between them.
B It cannot hold much water.
C It is very rough to touch and contains sand.
D None of these
sand does not have large particles!
The given figure shows two different types of root system i.e., X and Y. Which of the following options is correct regarding them?
(A) Younger sidewards roots of these root systems are called lateral roots.
(B) The Y type of root system provides greater anchorage to the plant.
(C) Mostly plants showing reticulate venation possess X type of root system.
(D) The food storing root of turnip is a modification of Y type of root system.
Read the given statements and select the correct option.
Statement 1 : Snake and crocodile are cold blooded animals.
Statement 2 : Snake and crocodile breathe through moist skin mostly.
A Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
C Statement 1 is correct but statement 2 is incorrect.
D Both statements 1 and 2 are incorrect.