500+ RRB NTPC BEST Questions 2024 General Awareness

Q1. When there is ___, Dead organisms are transformed into petroleum and natural gas.

Answer: Absence of air

Q2. Deuterium is __ of Hydrogen.

Answer: Isotope

Q3. the weight of iron is __, when it is undergoing the process of ‘rusting’.

Answer: Increases

Q4. Efficiency of the catalyst depends on its –

Answer: Molecular State

Q5. Egg shell is made up of __.

Answer: Calcium Carbonate

Q6. Which Vitamins are Fat Soluble?

Answer: A, D, E & K

Q7. Which was the First organic compound synthesized in a lab and it was done by whom?

Answer: Urea by Friedrich Wöhler

Q8. Fuse wire is made up of __.

Answer: Lead and Tin

Q9. ___ is used to coat Galvanised Iron.

Answer: Zinc

Q10. Which Gases are used by sea divers for under water breathing?

Answer: Oxygen & Helium

Q11. ____&____ gases are helpful for ripening of raw fruits.

Answer: Ethylene & Acetylene

Q12. The ____ found in an ore is known as Gangue.

Answer: Impurities

Q13. Iron is extracted from which ore?

Answer: Hematite

Q14. Kerosene is a mixture of ____.

Answer: Aliphatic hydrocarbons

Q15. Which Element is used for making of Lead pencil.

Answer: Graphite

Q16. The lightest metal is ____.

Answer: Lithium

Q17. ____ is the main ore of Mercury

Answer: Cinnabar

Q18. Which Metal is found in the highest proportion in earth’s crust?

Answer: Aluminium

Q19. Mine explosions are mostly caused by mixing of Air & __.

Answer: Methane

Q20. What is the compound used to in Nail polish remover?

Answer: Acetone

Q21. Natural rubber is a polymer derived from ____.

Answer: Isoprene

Q22. The coating on non-stick cookware is of _____.

Answer: polytetrafluoroethylene (PTFE) –
TEFLON

Q23. The Nuclear Fusion on the Sun’s surface result into formation of ____ Atoms.

Answer: Helium

Q24. Organic Compounds are only soluble in ___.

Answer: Non-polar solvents

Q25. ___ is also know as “FOOL’S GOLD”.

Answer: Iron Pyrite

Q26. In an Oxidation process ___happens.

Answer: Loss of electrons

Q27. Oxides of metals are ____.

Answer: Alkaline

Q28. Ozone is ___ in nature.

Answer: Diamagnetic

Q29. The chemical composition of paper is that of a ___.

Answer: Cellulose

Q30. Paraffin wax is __.

Answer: Saturated hydrocarbon

Q31. In which type of Rocks is Petroleum (Fossil Fuel) is found?

Answer: Sedimentary Rocks

Q32. ___ is also called White Gold.

Answer: Platinum

Q33. Which is the purest form of Iron?

Answer: Wrought Iron

Q34. Which Ore is used to extract Radium?

Answer: Pitchblende

Q35. Solder is an alloy of ____?

Answer: Tin and Lead

Q36. Which Radioactive Isotope is used in Cancer treatment?

Answer: Cobalt – 60

Q37. ____ is the element common to all acids

Answer: Hydrogen

Q38. ____ is created by Alloying Iron and Chromium.

Answer: Stainless Steel

Q39. The lustre of a metal is due to ____.

Answer: Presence of free electrons

Q40. Which Mineral element is found in chlorophyll?

Answer: Magnesium

Q41. The most abundant element in the earth’s crust is –

Answer: Oxygen

Q42. The term ‘catalysis’ was coined by ____.

Answer: Jöns Jakob Berzelius

Q43. Which element is the primary reason for radioactivity found in human body?

Answer: Potassium – 40

Q44. Germanium, an ultrapure metal is purified by which method?

Answer: Zone refining

Q45. Tooth enamel is made up of _____?

Answer: hydroxyapatite, a mineral compound of calcium and phosphate

Q46. Which gas is filled inside a Tube light?

Answer: Mercury Vapour & Argon

Q47. _____ is an aqueous solution of Acetic acid.

Answer: Vinegar

Q48. Which Vitamins are Water Soluble?

Answer: Vitamin B complex & Vitamin C

Q49. Silver turns black (Tarnish) because of its reaction with ____.

Answer: Sulphur

Q50. Melting of ice can be prevented with the use of –

Answer: Gelatin

Q51. A Bee Sting contains which Acid?

Answer: Methanoic Acid

Q52. An Orange contains ____ Acid.

Answer: Citric Acid

Q53. Etching of glass is done with the help of ____.

Answer: Hydrofluoric acid (HF)

Q54. Which acid is used in soft drinks?

Answer: Carbonic acid (H2CO3)

Q55. Silver Iodide is used as a ‘seed’ agent for making of –

Answer: Artificial Rain

Q56. __ is used as a catalyst for the synthesis of Sulphuric Acid by Contact Process.

Answer: Platinum (Pt)

Q57. Vanaspati Ghee is synthesized with the help of which catalyst?

Answer: Nickle (Ni)

Q58. Swelling of bread takes place because of-

Answer: Carbon dioxide

Q59. Cigarette lighters contain ____ Gas.

Answer: Butane

Q60. Which gas is used in fire extinguisher?

Answer: Carbon dioxide

Q61. ____ is termed as ‘Metal of Future’.

Answer: Titanium

Q62. Safety matches are prepared using –

Answer: Red Phosphorous

Q63. A Photoelectric cell contains ____metal.

Answer: Selenium

Q64. Zinc Phosphide is used as?

Answer: Rat Poison

Q65. Which is the hardest substance found in human body?

Answer: Tooth Enamel

Q66. Ozone is an _ of Oxygen.

Answer: Allotrope

Q67. Which Metal is naturally Anti-Bacterial?

Answer: Copper

Q68. Which was the first element to be produced after Big Bang?

Answer: Hydrogen

Q69. If you pour a handful of salt into a glass of water, the water level will ____.

Answer: Go Down

Q70. Alcoholic drink contains ____.

Answer: Ethyl Alcohol

Q71. Glucose in stored in the form of ___ by Animals.

Answer: Glycogen

Q72. Ascariasis is caused by __.

Answer: Round Worm

Q73. BCG vaccination (Bacillus Calmette Guerin) gives immunity from __.

Answer: Tuberculosis

Q74. Blood groups was discovered by –

Answer: Karl Landsteiner

Q75. The first successful heart transplant in India was performed by –

Answer: Dr. Panangipalli Venugopa

Q76. The oral polio vaccine was discovered by-

Answer: Jonas Salk

Q77. Companion cells are unique to ____?

Answer: Angiosperms

Q78. DNA stands for __.

Answer: Deoxyribonucleic Acid

Q79. Dog bite can cause rabies. Bite of which other animal can also cause rabies?

Answer: Bat

Q80. Endocrine glands are also known as ____

Answer: Ductless Glands

Q81. The Small Pox vaccine was discovered by-

Answer: Edward Jenner

Q82. Deficiency of iodine leads to ___.

Answer: Enlargement of Thyroid Gland

Q83. First vaccine produced by bio-technology was used against which virus?

Answer: Hepatitis-B

Q84. Turmeric is obtained from ___ of a Plant.

Answer: Stem

Q85. Genes are made by __.

Answer: Polynucleotides

Q86. Haematopoiesis occurs in __.

Answer: Bone marrow

Q87. Leprosy is also known as _.

Answer: Hansen’s Disease

Q88. A human skull has _ number of bones.

Answer: 22 Bones

Q89. Deposition of which acid in the muscles leads to a feeling of fatigue in Humans?

Answer: Lactic Acid

Q90. RBC’s count in the blood is increased when a person is having _.

Answer: Polycythaemia

Q91. Where are the Lachrymal glands situated in the human body?

Answer: Eye Orbit

Q92. The red, blue and purple colours seen in plants is because of the __ pigment.

Answer: Anthocyanin

Q93. Which part of the human brain controls Motor skills of the body?

Answer: Frontal Lobes

Q94. What is the name the hormone that regulates the amount of glucose in the blood .

Answer: Insulin

Q95. Name the gas used for making vegetable ghee?

Answer: Hydrogen

Q96. Which is the largest gland in the human body?

Answer: Liver

Q97. The smallest functional unit of a kidney is the ?

Answer: Nephron

Q98. James D. Watson, a Nobel Prize winning scientist is expert in the field of ____.

Answer: Genetics

Q99. Polio is caused by a __.

Answer: Virus

Q100. The flow of energy in the Energy Pyramid is always ___.

Answer: Upwards