The letters A to Z of the alphabet are given consecutive numerical values in ascending order and the sum of the numerical values of the letters of the word SORE is 57. What is the sum of the numerical values of the letters in the word GATE?

The last bus Meerut to Delhi is $10 \mathrm{PM}$. If the buses leave at equal intervals of $3$ hours each and there are six buses in all, when does the third bus leave Delhi?

Which of the following gases is lighter than air?

(A) Carbon dioxide
(B) Oxygen
(C) Ammonia
(D) Chlorine

Amalgams are:

(A) Alloys which contain carbon
(B) Alloys which have great resistance to abrasion
(C) Alloys which contain mercury as one of the contents
(D) Highly coloured alloys

The main important feature of a neutron bomb is that when it is dropped on a city, it would damage­:

(A) Both the living organisms and buildings
(B) The buildings but not the living organisms
(C) The living organisms but spare buildings
(D) None of the above

In which of the following processes light energy is converted into chemical energy?

(A) Respiration
(B) Fermentation
(C) Photosynthesis
(D) Photorespiration

One fathom is equal to:

(A) 6 metres
(B) 6 feet
(C) 60 feet
(D) 100 cm

The picture tube of a black and white T.V. set has only one electron gun that produces the picture on its screen. The number of electron guns, a colour picture tube has, is:

(A) Five
(B) Three
(C) Four
(D) Six

The principle of working of the periscope is based on:

(A) Reflection only
(B) Refraction only
(C) Reflection and refraction
(D) Reflection and interference