In an experiment, hydrochloric acid was reacted with calcium carbonate at room temperature and pressure.
If 80 cm3 of gas X was produced then, the number of molecules and mass of gas X given off are respectively
A 3.33 × 10-3, 0.5 g
B 2.15 × 1021, 0.157 g
C 6 × 1023, 7.5 g
D 4 × 1021, 1.5 g
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Study the given Venn diagram.
Following statements represent the causes of different kinds of pollution. Which of the following statements hold true for the given Venn diagram?
(i) Factory discharge coming out of a chimney can be included in R.
(ii) Construction work going on at a building site can be included in Q.
(iii) Youngsters dancing in a disco can be included in O.
(iv) Vehicles moving on roads can be included in O.
A(i) and (ii)
B(ii) and (iii)
C(ii) and (iv)
D(ii), (iii) and (iv)
P is the state of matter that changes into state Q on cooling and changes into state R on heating. Select the option that correctly identifies the character of P, Q and R.
|A||Has no fixed volume||Has fixed shape||Has fixed shape|
|B||Has fixed volume||Has no fixed volume||Has no fixed shape|
|C||Has fixed shape||Has no fixed volume||Has no fixed shape|
|D||Has no fixed shape||Has fixed volume||Has no fixed volume|
Select the correct option regarding the given figure, if alphabet 'P' represents the star at the centre of our solar system.
AIf Q is Mars then the number of R around it will be 2.
BIf Q is Venus then the number of R around it will be 3.
CIf Q is Jupiter, then the number of R around it will be 58.
DIf Q is Neptune, then the number of R around it will be 0.
In the following four groups of plant parts used as food, one member is odd one out.
Select the option in which the odd member is encircled INCORRECTLY?
A Wheat, Maize, , Bajra
B Arhar, , Moong, Rajma
C , Sugarcane, Potato, Ginger
D , Coriander, Methi, Sugarcane
Refer to the given Venn diagram.
Select the correct option regarding P, Q, R, S and T.
AS could be a rose plant whereas P could be a potato plant.
BQ could be Bryophyllum and T could be strawberry.
CR could be a fern or an alga.
DQ could be spinach and P could be colocasia.
Study the given correlation.
Heat treatment : Sterilisation : : Vaccination : X
Here, X refers to
Sterilisation is the other common term for the process heat treatment likewise the other common term used for vaccination is immunization.