RRB JE IMPORTANT CHEMISTRY QUESTIONS 2019
Download the important chemistry questions that were discussed in the video. Feel free to visit our website to attempt previous year papers of RRB JE.
Download RRB JE IMPORTANT CHEMISTRY QUESTIONS
Download RRB JE Previous Papers PDF
Take a RRB JE Free Mock Test
Read this Post in Telugu
Question 1: Which metal causes Itai-Itai disease?
a) Cadmium
b) Chromium
c) Cobalt
d) Copper
Question 2: The element which is used for vulcanizing rubber
a) Sulphur
b) Bromine
c) Silicon
d) Phosphorus
Question 3: The noble gas used for the treatment of cancer is
a) Helium
b) Argon
c) Krypton
d) Radon
Question 4: The base used as an antacid is
a) Calcium hydroxide
b) Barium hydroxide
c) Magnesium hydroxide
d) Silver hydroxide
Question 5: The Refrigerant ‘FREON’ is
a) Calcium Terra Fluoride
b) Difluoro Dichloro Methane
c) Fluorspar and Felspar
d) Hydrofluosilicic acid
Question 6: The Chemical name of table salt is ?
a) potassium chloride
b) sodium chloride
c) calcium chloride
d) sodium hyposulphate
Question 7: Which of the following gases is used in cigarette lighters ?
a) Butane
b) Methane
c) Propane
d) Radon
Question 8: Why is Compressed Natural Gas (CNG) considered as eco- friendly ?
a) It has very low quantity of hydro -carbons
b) Its main content (80-90%) is Ethane gas
c) It has very low carbon monoxide
d) Gases present in CNG do not burn fully hence emission remain low
e) None of these
Question 9: The term PCB stands for
a) Polyethylene Card Board
b) Printed Circuit Board
c) Printed Card Board
d) Polyethylene Circuit Board
Question 10: Colour bands for 1.5 Ohms resistor will be
a) Brown, green, brown
b) Brown, green, gold
c) Brown, gold, green
d) Green, gold, gold
Question 11: Main element of a filter that reduces the A. C. component of the output is
a) resistor
b) inductor
c) transformer
d) capacitor
Question 12: In the context of genetics, DNA stands for
a) Di – Neuro Acid
b) Daily News Analysis
c) Detoxic Neuro Acid
d) Deoxyribo Nucleic Acid
Question 13: Which alloy steel would be used for making leaf and coil springs ?
a) Nickel – Chrome
b) Vanadium
c) Silicon – Manganese
d) Chrome – molybdenum
Question 14: In aluminium casting bubbles of argon or nitrogen are passed through the molten
a) to improve surface finish of the casting
b) to remove hydrogen as porosity
c) to precipitate the inclusions
d) to mix the alloy elements
RRB JE Previous Papers (Download PDF)
Question 15: Acid rain is caused by presence of which of the following gases in the atmosphere
a) Nitrogen and Oxygen
b) Sulphur dioxide and Nitrogen oxide
c) Carbon dioxide and Carbon -mono- oxide
d) Ozone and argon
Question 16: Brass is an alloy of
a) copper and zinc
b) copper and tin
c) copper and aluminium
d) aluminium and tin
Question 17: Besides hydrogen, which of the following elements is common in organic compounds?
a) Phosphorus
b) Sulphur
c) Nitrogen
d) Carbon
Question 18: The chemical bond in germanium crystal is
a) Metallic
b) Co – valent
c) Electro – valent
d) Vaan der walls
Question 19: White phosphorus is stored in
a) Water
b) Sulphuric Acid
c) Alcohol
d) Kerosene
Question 20: Urea is a
a) Sodium fertilizer
b) Phosphorus fertilizer
c) Potassium fertilizer
d) Nitrogen fertilizer
General Science Notes for RRB Exams (PDF)
Answers & Solutions:
1) Answer (A)
2) Answer (A)
3) Answer (D)
4) Answer (C)
5) Answer (B)
6) Answer (B)
7) Answer (A)
8) Answer (C)
9) Answer (B)
10) Answer (B)
11) Answer (D)
12) Answer (D)
13) Answer (C)
14) Answer (B)
15) Answer (B)
16) Answer (A)
17) Answer (D)
18) Answer (B)
19) Answer (D)
20) Answer (D)
