2291: Which one of the following has a greater perimeter than the rest ?
(a) A square with an area of 36 sq cm
(b) An equilateral triangle with a side of 9 cm
(c) A rectangle with 10 cm as length and 40 sq cm as area
(d) A circle with a radius of 4 cm
2292: With reference to the treatment of cancerous tumours, a tool called cyberknife has been making the news. In this context, which one of the following statements is not correct ?
(a) It is a robotic image guided system
(b) It delivers an extremely precise dose of radiation
(c) It has the capability of achieving sub-millimetre accuracy
(d) It can map the spread of tumour in the body
2293: Gypsum is added to cement clinker to
(a) Increase the tensile strength of the cement
(b) Bind the particles of calcium silicate
(c) Decrease the rate of setting of cement
(d) Facilitate the formation of colloidal gel
2294: Consider the following statements regarding the Armed Forces :
I. First batch of women pilots was commissioned in Indian Air Force in 1996.
II. Officer's Training Academy is located in Nagpur.
III. Southern Command of Indian Navy has its Headquarters at Chennai.
IV. One of the Regional Headquarters of Coast Guard is located at Port Blair.
Which of these statements are correct ?
(a) I, II, III and IV
(b) II, III and IV
(c) III only
(d) IV only
2295: The chief ingredient of the mosquito repellent cream is derived from:
(a) Tulsi
(b) Neem
(c) Lemon
(d) Rice bran