Study the given flow chart about respiratory structures in different organisms. Identify the organisms P, Q, R and S and select the correct option.
A P-Cockroach, Q-Tadpole, R-Pigeon, S-Earthworm
B P-Grasshopper, Q-Fish, R-Frog, S-Amoeba
C P-Spider, Q-Frog, R-Crab, S-Paramecium
D P-Mynah, Q-Snake, R-Penguin, S-Leech
Frogs have gills!!!!
The couples shown in the given picture belong to which states of India respectively?
AKashmir and Maharashtra
BSikkim and Odisha
CGujarat and West Bengal
DUttar Pradesh and Kerala
The above figures show the force required to move a 100 g object over different surfaces. The friction is greatest at _______.
A Surface W
B Surface X
C Surface Y
D Surface Z
This question is very hard for 3rd standard!you don't know how to make questions at all!!!!!ððððð¡ð¡ð¡ð¡ð¡ð¡ð¡ð¿ð¿ð¹ð¹ðð
Study the given flow chart carefully.
Choose the correct statement.
A During step I, carbon dioxide of the air condenses first to form liquid carbon dioxide.
B Boiling point of fraction II is -183°C.
C The air is compressed in step I simply by applying high pressure and high temperature.
D % by volume of the fraction III in air is 20.9.
Read the following statements.
(P) _______ is the upper limit of the ground water that fills the space in soil and rocks.
(Q) _______ are the places between layers of hard rocks that collect seeped water.
(R) The groundwater gets recharged by _______.
(S) Ground water is almost free of _______.
Select the option that correctly fills up the blanks in any two statements.
AQ - Infiltration, S - Impurities
BP - Infiltration, R - Aquifer
CR - Pump, S - Minerals
DQ - Aquifer, R - Infiltration.
If amount taken for each substance is 18 g then, which of the following represents the correct order of number
of atoms in them?
(Given : Atomic mass of H = 1 u, C = 12 u, O = 16 u)
A H2O > CO2 > CH4 > O2
B CH4 > H2O > O2 > CO2
C CO2 > H2O > CH4 > O2
D CH4 > H2O > CO2 > O2
answer should be D
Ishaan tested the nature of a few common substances with different indicators and recorded his observations as follows :
Substance P turned methyl orange yellow.
Substance Q turned phenolphthalein colourless.
Substance R did not have any effect on blue or red litmus.
Substance S turned China rose indicator green.
P, Q, R and S could be respectively
A Lemon juice, fermented milk, salt solution and milk of magnesia.
B Sugar solution, vinegar, water and curd.
C Lime water, apple juice, sugar solution and saliva
D None of these.