496: In a rectangle with one side 4 cms, twelve equal squares are kept. There are three rows, each containing four squares. There is no empty space in between adjacent squares. What is the area of each square ?
(a) 5/7 sq cm
(b) 7/5 sq cm
(c) 1 sq cm
(d) 25/12 sq cm
497: When iron rusts, the weight:
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases then decreases
498: Who among the following Indian rulers established embassies in foreign countries on modern lines ?
(a) Haider Ali
(b) Mir Qasim
(c) Shah Alam II
(d) Tipu Sultan
499: Match List I with List II and select the correct answer by using the codes given below the lists :
List I------------ List II
I. Chittagong Armoury raid----(A) Lala Hardayal
II. Kakori Conspiracy--------(B) Jatin Das
III. Lahore Conspiracy------(C) Surya Sen
IV. Ghadr Party-------------(D) Ram Prasad Bismil
----------(E) Vasudeo Phadke
Codes:
(a) I-C, II-D, III-A, IV-E
(b) I-D, II-C. III-B, IV-E
(c) I-C, II-D, III-B, IV-A
(d) I-B, II-D, III-C, IV-A
500: Which one of the following is useful for biological control of pests?
(a) Honey bees and locusts
(b) Scorpions and spiders
(c) Wasps and birds
(d) Parrots and kites