IPRC Scientific Assistant Chemistry Paper 2015

DSSSB Delhi has published the Junior Scientific Assistant Recruitment 2026 in the discipline Biology, Ballistics, Quality Control, Photography, Cyber Forensic, Crime Scene, Mobile Forensic Unit, Finger Print and Physics. You can apply on or before 15th July 2026 throgh the official website https://dsssb.delhi.gov.in

Here, we are publishing the DSSSB Junior Scientific Assistant Model question paper, which will be helpful to you for the preparation of said examination.

The most electronegative element among the following is
(a) Sodium
(b) Bromine
(c) Fluorine
(d) Oxygen

The heat energy required to raise the temperature of 1 kg of the substance by 1 K
(a) Specific heat
(b) Thermal capacity
(c) Water equivalent
(d) None of the above

If the Enthalpy (Heat) of a reaction is positive, it is
(a) Exothermic reaction
(b) Endothermic reaction
(c) Neither exothermic nor endothermic
(d) Either exothermic or endothermic

Ammonia is manufactured by
(a) Haber process
(b) Hokker process
(c) Ostwalds process
(d) Beckmann process

Which one of the following contain metal-metal bond?
(a) Cupric Chloride
(b) Stannous Chloride
(c) Mercurous Chloride
(d) Mercuric Chloride

Which of the following is not correct about diamond
(a) Diamond is a non conductor of electricity
(b) It is chemically inert
(c) Its refractive index is very high
(d) Hybridization of the carbon is SP2

The method that cannot be used for removing permnent hardness of water is
(a) Ion exchange
(b) Distillation
(c) Adding caustic sode
(d) Boiling

Which one of the following compounds contains a cation having non-inert gas outermost configuration?
(a) NaCl
(b) KCl
(c) CaCl2
(d) CuCl2

Calculate the number of protons, neutrons and electrons in Bromine (atomic number 35, Mass Number 80)
(a) No. of Protons – 17, Electrons -18, Neutrons – 80
(b) No. of Protons – 35, Electrons – 45, Neutrons – 35
(c) No. of Protons – 35, Electrons – 35, Neutrons – 45
(d) No. of Protons – 45, Electrons – 35, Neutrons – 45

Liquids assume spherical shape to
(a) To lower the energy
(b) Increase the surface area
(c) To increase the number of molecules on the surface
(d) All of the above

Last Updated on 1st April 2022