Give reasons: a) Neither q nor w is a state function but q + w is state function.

(a) Echidna and platypus lay eggs, but are considered as mammals because  (i) They are warm blooded animals  (ii) They all have four chambered heart  (iii) Mammary glands for the production of milk...

Fungi are not classified in plant kingdom because their cell wall is different from plant cell and is made up of chitin. They also lack chlorophyll and hence cannot do...

Hint—  (a) No need of storage.  (b) Because they are lignified.  (c) Presence of stone cells (sclerenchyma)  (d) Presence of Collenchyma.  (e) Sclerenchyma

In a 3-celled pollen, the generative cell has already divided and formed 2male gametes. Hence, it will not divide again in the pollen tube. Since ina 2-celled pollen, the generative...

Copper is a much better conductor of heat than steel. Also, copper does not react with water at all but steel (an alloy of iron) reacts with steam. So, copper is used to...

Number of kings and queen in a deck of 52 cards = 8 P( either a king or a queen) = 8/52 = 2/13 P(neither a king nor a queen) = 1-2/13...

(c) The surface tension may be zero. (d) The contact angle may be 90°. Explanation:  The rise in a capillary tube is given as, h = 2S.cosθ/rρg The capillary tube has a certain...

(c) :- In Wurtz reaction alkyl halide reacts with sodium metal in the presence of dry ether to give alkane.

The correct answer is (c) (c) may be in thermal equilibrium.

The correct answer is (d) photon.