Daily NEET MCQ- June 30, 2022 - NEET MCQ

The product contains one term which is extensive, or which depends on mass, so we can say that their product also depends on mass and is therefore extensive.

Extensive properties are those which depend on the amount of matter in the sample. For eg: Volume, Internal energy, mass.

Intensive properties are those which don’t depend on the amount of matter in the sample. For eg: temperature, pressure, density.

Physical properties of dihydrogen include that it is colourless, odourless, tasteless, combustible gas. It is lighter than air and insoluble in water and is also neutral to Litmus. Therefore heavier than air is not a property of dihydrogen.

At 970 Kelvin, an electric discharge 2 moles of hydrogen molecule combines with one mole of Oxygen in order to form 2 moles of water. This has an enthalpy change of about 285.9 KJ/mol, the enthalpy change is negative for the above process.

The order of reactivity of halogens with hydrogen is that Fluorine’s reactivity is greater than that of chlorine and chlorine’s reactivity is greater than that of bromine and bromine’s reactivity is greater than that of Iodine.

Periwinkle and China rose are examples of pentamerous flowers (5 floral appendages). Lilies are examples of trimerous flowers (3 floral appendages). Jasmine is an example of tetramerous flower (4 floral appendages).

A mustard flower is an example of an actinomorphic flower. A flower is said to be actinomorphic if it possesses radial symmetry and zygomorphic if it possesses bilateral symmetry.

In hypogynous flower, ovary is present at the uper most level when compared to sepals, petals and stamens. In perigynous flower, ovary is neither the bottom most whorl nor the top most whorl. Ovary in perigynous flower is called half superior ovary. Ovary in epigynous flower is called inferior ovary.

In hypogynous flower, gynoecium occupies the highest position. Superior ovary is present in hypogynous flower. In epigynous flower, gynoecium is the bottom most whorl. China rose is an example of hypogynous flower.