The average age of 20 boys in a class is 12 years. 5 new
boys are admitted to the class whose average age is 7 years.
The average age of the boys in the class becomes
(a) 8.2 years
(b) 9.5 years
(c) 12.5 years
(d) 11 years
Through which X rays cannot pass ?
The fundamental scientific principle in the operation of a battery is (a) Acid-base interaction (b) Dialysis (c) Dissociation of electrolytes (d) Oxidation-reduction
In equilibrium, a perfectly competitive firm will equate (a) Marginal social cost with marginal social benefit (b) Market supply with market demand (c) Marginal profit with marginal cost (d) Marginal revenue with marginal cost
In which schedule of the Constitution of India, the languages lies ?
Which company invented the transistor radio? (a) Sony (b) Texas Instuments (c) Panasonic (d) Telstra
Who was the first Indian actress to receive the Padma Shri award ?
Epigraphy means (a) The study of coins (b) The study of inscriptions (c) The study of epics (d) The study of geography
In the sequence of numbers 5, 8, 15, 20, 29, 40, 53, one number is wrong. The wrong number is (a) 15 (b) 20 (c) 29 (d) 40
The average of a collection of 20 measurements was calculated to be 56 cm. But later it was found that a mistake had occurred in one of the measurements which was recorded as 64 cm, but should have been 61 cm. The correct average must be (a) 53 cm (b) 54.5 cm (c) 55.85 cm (d) 56.15 cm
what is the ssc
A training ship of the Indian Navy, controlled through sails, left on a sixteen month goodwill mission around the world in January 2003. which is that ship? (a) INS Tarangini (b) INS Garuda (c) INS Tir (d) INS Godavari
The marked price of an electric iron is Rs. 690. The shopkeeper allows a discount of 10% and gains 8%. If no discount is allowed, then his gain percent would be (a) 20% (b) 24% (c) 25% (d) 28%