Top-20 Chemistry Questions for RRB-NTPC 2019 PDF
Latest and most Important Chemistry Questions to crack RRB NTPC Exam. Download the PDF and go through the video explanations of most important Chemistry Questions and practice them by downloading the PDF provided below.
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Question 1: The compound used in the anti-malarial drug is?
Question 2: __________ is an efflorescence compound
Question 3: Which one of the following is an example of thermoplastic?
Question 4: The elements with same mass number but different atomic numbers are referred to?
d) None of these
Question 5: Which one of the following is used to produce green color while burning crackers?
a) Aluminium powder
b) Sodium salt
c) Strontium sulphate
d) Barium salt
Question 6: After some days, statues of brass and bronze become green due to:
Question 7: Which of the following is not a chemical change?
a) Melting of ice
b) Souring of milk
c) Burning of paper
d) Digestion of food
Question 8: Which one of the following is used to produce artificial rain?
a) Potassium Iodide
b) Silver Iodide
c) Solid Carbon Dioxide
d) All of the above
Question 9: ………. is a chemical process or a reaction between fuel (hydrocarbon) and oxygen. producing heat and light energy resulting in a flame.
Question 10: When a substance loses oxygen during a reaction then it is said to be ?
d) None of the above
Question 11: Which of the following is used in Fire Extinguishers?
Question 12: ……….. compound is used as a drying agent.
a) Calcium oxide
b) Calcium carbide
d) Calcium carbonate
Question 13: ………….is the fourth state of matter.
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
Question 15: Which of the following does not sublimate ?
b) Ammonium chloride
Question 16: 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 17: Which of the following is the most electro-negative element?
Question 18: Which among the following is a liquid non-metal at room temperature?
Question 19: Which colloidal solution has liquid as both dispersed phase and medium?
Question 20: Stainless steel is an alloy formed from the mixture of _____.
a) Iron, carbon, chromium, Platinum
b) Iron, carbon, chromium, nickel
c) Iron, carbon, copper, nickel
d) Iron, Aluminium, chromium, nickel
Answers & Solutions:
1) Answer (A)
2) Answer (C)
3) Answer (A)
4) Answer (C)
5) Answer (D)
6) Answer (B)
7) Answer (A)
8) Answer (D)
9) Answer (C)
10) Answer (C)
11) Answer (C)
12) Answer (A)
13) Answer (A)
14) Answer (B)
15) Answer (B)
16) Answer (B)
17) Answer (C)
18) Answer (D)
19) Answer (D)
20) Answer (B)
We hope this Questions on Important Chemistry PDF for RRB NTPC Exam will be highly useful for your Preparation.