HPPSC: General science

Fats are made from edible oils using the process of :

The main precursors of winter smog are :

Most kidney stones are composed of :

There are two statements given below : Statement I : Steam produces less severe burns than water at the same temperature. Statement II : Dry ice is colder than regular ice. In the light of these two statements, choose the most appropriate answer from the options given below :

Arrange the following electromagnetic waves according to the increasing frequency : (1) Gamma rays (2) X-rays (3) Radio waves (4) Microwaves

Consider the given four statements and choose the correct answer from the given options : (1) A concave mirror is a diverging mirror (2) Image formed by a concave mirror is generally real and inverted (3) A convex mirror is a converging mirror (4) Image formed by a convex mirror is always virtual, erect and diminished

Consider the given four statements about ethanol and choose the correct answer from the given options : (1) It is the main constituent of all alcoholic drinks (2) It is not a good solvent (3) It is soluble in water in all proportions (4) It cannot be used as an additive in petrol

Match List I with List II and choose the correct answer from the given options : List I (Acid): (a) Ascorbic acid (b) Malic acid (c) Formic acid (d) Tartaric acid List II (Source): (i) Apples and pears (ii) Ant stings (iii) Tamarind and grapes (iv) All citrus fruits Codes: (a) (b) (c) (d)

Match List I with List II and choose the correct answer from the given options : List I: (a) Hydrophone (b) Megaphone (c) Anemometer (d) Tachometer List II: (i) An instrument measuring the rotation speed of a shaft or disk (ii) An instrument that measures wind speed (iii) An instrument that spreads sound to far-off places (iv) An underwater device that detects and records ocean sounds from all directions Codes: (a) (b) (c) (d)