Following are the 20 Questions from the 4th Part of Top 100 RRB NTPC Chemistry Questions Series. This questions would be very helpful for your RRB NTPC 2019 Exam preparation. Let us know what is your score out of 20 in solving the RRB NTPC Chemistry Questions 04. All the best.
RRB NTPC Chemistry Questions 04
Q61. Paraffin wax is ________.
Ans -: Saturated hydrocarbon
Q62. In which type of Rocks is Petroleum (Fossil Fuel) is found?
Ans -: Sedimentary Rocks
Q63. _______ is also called White Gold.
Ans -: Platinum
Q64. Which is the purest form of Iron?
Ans -: Wrought Iron
Q65. Which Ore is used to extract Radium?
Ans -: Pitchblende
Q66. Solder is an alloy of _________.
Ans -: Tin and Lead
Q67. Which Radioactive Isotope is used in Cancer treatment?
Ans -: Cobalt – 60
Q68. _________ is the element common to all acids.
Ans -: Hydrogen
Q69. ______ is created by Alloying Iron and Chromium.
Ans -: Stainless Steel
Q70. The lustre of a metal is due to _________.
Ans -: Presence of free electrons
Q71. Which Mineral element is found in chlorophyll?
Ans -: Magnesium
Q72. The most abundant element in the earth’s crust is –
Ans -: Oxygen
Q73. The term ‘catalysis’ was coined by _______.
Ans -: Jöns Jakob Berzelius
Q74. Which element is the primary reason for radioactivity found in human body?
Ans -: Potassium – 40
Q75. Germanium, an ultrapure metal is purified by which method?
Ans -: Zone refining
Q76. Tooth enamel is made up of _______.
Ans -: hydroxyapatite, a mineral compound of calcium and phosphate
Q77. Which gas is filled inside a Tube light?
Ans -: Mercury Vapour & Argon
Q78. _______ is an aqueous solution of Acetic acid.
Ans -: Vinegar
Q79. Which Vitamins are Water Soluble?
Ans -: Vitamin B complex & Vitamin C
Q80. Silver turns black (Tarnish) because of its reaction with _______.
Ans -: Sulphur
That is all from us in this Top 100 RRB NTPC Chemistry Questions 04 Blog. Keep checking this space for the remaining 1 part which will be released soon.
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