Thursday, 2 February 2017

General Science pdf for competitive exams free download

General Science Questions in PDF Free Download : Dear expert you know that General Science is very important section for every Govt Jobs and bank jobs with all competitive exams. Meritmock team presenting very top most expected MCQs on Every Day Science and General Science for aspirants better exam preparation. We providing Download General Science GK Objective Questions free PDF in our final mcqs article. So wait and watch our last general science mcqs post.

Here is the the general science for competitive exams PDF Content and Objective type questions for competitive exams and your Knowledge test is designed to measure the basic science knowledge for school science teachers, teacher-educators, and higher education content as well as all type of competitive examinations. Below you can most important GK Questions Download as General Science GK Objective Questions PDF for your better competitive exams preparation here. You are reading most important objective type questions related to GK General Science from our mm team subject experts.  We know and understand your need for CE as General Science e-book (Biology, Physics & Chemistry) PDF download.

In this post we are with expected general science 25 mcqs questions and answers for merit rank marks score.

Q. 1. Parmanent hardness of water may be removed by the addition of —
(A) Alum
(B) Sodium Carbonate
(C) Lime
(D) Potassium Permanganate

Q. 2. Potassium nitrate is used in —
(A) Salt
(B) Glass 
(C) Fertiliser
(D) Medicine

Q. 3. In which type of rocks are metals like Gold and Copper mostly found ?
(A) Old igneous 
(B) Old sedimentary
(C) Old metamorphic
(D) New metamorphic

Q. 4. Which of the following gases is lighter than air ?
(A) Carbon dioxide
(B) Oxygen
(C) Ammonia 
(D) Chlorine

Q. 5. Which of the following is used as lubricant ?
(A) Graphite 
(B) Silica
(C) Diamond
(D) Iron Oxide

Q. 6. The purest form of iron is —
(A) Steel
(B) Pig iron
(C) Cast iron
(D) Wrought iron 

Q. 7. The percentage of carbon is the least in —
(A) Grey cast iron
(B) Wrought iron
(C) White cast iron
(D) Steel 

Q. 8. The colour of Emerald is —
(A) Violet
(B) Yellow
(C) Deep Green 
(D) Prussian Blue

Q. 9. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of —
(A) Nitrates
(B) Zeolites 
(C) Sulphonates
(D) None of these

Q. 10. Rust is —
(A) A mixture of Fe2O3 and Fe(OH)2
(B) A mixture of FeO and Fe(OH)2
(C) FeO only
(D) A mixture of Fe2O3, 3H2O and FeO 

Q. 11. Liquefied Petroleum gas (LPG) consists of mainly —
(A) Methane, Ethane and Hexane
(B) Ethane, Hexane and Nonane
(C) Methane, Butane and Propane 
(D) Methane, Hexane and Nonane

Q. 12. The metal that is present in Photo Films is —
(A) Mercury
(B) Platinium
(C) Magnesium
(D) Silver 

Q. 13. Which of the following is in liquid form at room temperature ?
(A) Cerium
(B) Sodium
(C) Francium 
(D) Lithium

Q. 14. Soda water contains —
(A) Nitrous acid
(B) Carbonic acid
(C) Carbon dioxide 
(D) Sulphuric acid

Q. 15. Which of the following is basis of the modern periodic table ?
(A) Atomic mass
(B) Atomic number 
(C) Atomic size
(D) Atomic volume

Q. 16. Of the following metals, which one pollutes the air of a big city ?
(A) Copper
(B) Cadmium
(C) Lead 
(D) Chromium

Q. 17. Brass is an alloy of —
(A) Nickel and Copper
(B) Copper and Silver
(C) Nickel and Zinc
(D) Zinc and Copper 

Q. 18. The element required for Solar energy conversion —
(A) Beryllium
(B) Silicon 
(C) Tantalum
(D) Ultra pure carbon

Q. 19. Monazite is an ore of —
(A) Sodium
(B) Titanium
(C) Thorium 
(D) Zirconium

Q. 20. Potassium Permanganate is used for purifying drinking water, because —
(A) It dissolves the impurities of water
(B) It is a sterilizing agent
(C) It is an oxidising agent 
(D) It is a reducing agent.

Q. 21. The presence of which of the following salts in water causes corrosion in steam boilers ?
(A) Sodium Chloride
(B) Magnesium Chloride 
(C) Calcium bicarbonate
(D) Potassium bicarbonate

Q. 22. Water is a good solvent of ionic salts because —
(A) It has no colour
(B) It has a boiling point
(C) It has a high dipole moment 
(D) It has a high specific heat

Q. 23. The hardest substance available in earth is —
(A) Platinum
(B) Silicon
(C) Diamond 
(D) Gold

Q. 24. Which of the following is the best conductor of electricity ?
(A) Zinc
(B) Copper
(C) Gold
(D) Silver 

Q. 25. The ratio of pure gold in 18 carat gold is —
(A) 60%
(B) 75% 
(C) 80% 
(D) 100%

1. (B) 2. (B) 3. (A) 4. (C) 5. (A) 6. (D) 7. (D) 8. (C) 9. (B) 10. (D) 11. (C) 12. (D)
13. (C) 14. (C) 15. (B) 16. (C) 17. (D) 18. (B) 19. (C) 20. (C) 21. (B) 22. (C) 23. (C) 24. (D) 25. (B)

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