Chemistry MCQs with Answers – Free Bio MCQs Test for All Topics

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Q1 : For the generation of biogas, the materials commonly used are__________?

A: Animal wastes B: Forest residues C: Aquatic plants D: None of these

Q2 : Give Electronic configuration of Sodium:

A: 1s2,2s2,2p6 B: 1s2,2s2,2p6,3s2 C: 1s2,2s2,2p6,3s1 D: None of these

Q3 : Air is a/an _________?

A: Compound B: Element C: Electrolyte D: Mixture

Q4 : The element used for the formation of alloys is__________?

A: Iron B: Calcium C: Mercury D: Chromium

Q5 : The Bond Energy of H-F is________?

A: 456kJ/mol B: 562kJ/mol C: 281kJ/mol D: None

Q6 : Benzene gives mainly_________?

A: Addition reaction B: Substitution reactions C: Halogenation D: All of these

Q7 : The Chemical Formula of Sand is___________?

A: Si2O3 B: SiO2 C: Al2O3 D: Sr2O

Q8 : Which of the following can be separated by ” Sublimation Method”?

A: Sand and Iron Filing B: Sand and Naphthalene C: Both A & B D: None

Q9 : Why do we determined the boiling point of a liquid?

A: To check its Acidity and Basicity B: To Check temperature C: To check its Purity and nature D: None of These

Q10 : Why does Ethyl Alcohol show high boiling point then Acetone?

A: Due to Hydrogen bonding B: Due to high molecular weight C: Due to its Acidic nature D: Due to its Low molecular weight

Q11 : The Boiling Point of Ethyl Alcohol is_________?

A: 78°C B: 58°C C: 73°C D: 56°C

Q12 : The process in which solid changes directly into vapours without passing through liquid state?

A: Decantation B: Sublimation C: Evaporation D: None

Q13 : The pH of milk is_______?

A: 9 B: 6.5-7 C: 8 D: 12

Q14 : Calculate % of N in KNO3__________?

A: 14.34% B: 18.56% C: 13.86% D: None of these

Q15 : Element that have same number of neutrons are called__________?

A: isotope B: isobar C: isotone D: None of these

Q16 : Who used the term Concentrationwindow to draw the arbitrary lines of demarcation

A: Einstein B: Dr.A.Walash C: Schwartz D: S.E.Manhan

Q17 : Which one of the following serve as aquatic solar fuel cell:

A: Bacteria B: Virus C: Fungi D: Algae

Q18 : How much solar flux absorb by earth’s surface is used to drive hydrologic cycle:

A: 1/2sec B: 1/3rd C: 1/4th D: 1/5th

Q19 : Polyamides are synthetic polymers commonly known as___________?

A: synthetic B: Protein C: Cellulose D: Nylon

Q20 : The rate of formation of ozone depends on the flux of:

A: visible radiation B: Ultra violet radiation C: Infrared radiation D: Gamma rays

Q21 : Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use:__________?

A: Hydrogen tank B: Nitrogen tank C: Oxygen tank D: None of these

Q22 : The earth absorb radiation in Visible range but emit radiation at the same rate in the:

A: Ultra voilet B: Gamma rays C: Infrared D: All of these

Q23 : What is the mass of one mole of Iodine?

A: 74g B: 254g C: 127g D: 53g

Q24 : Atoms of all the elements always contain in nucleus:

A: Proton and neutron B: Neutron and electron C: Proton D: Neutron

Q25 : Chemistry is given from ……language ?

A: Latin B: Greek C: Arabic D: None of these

Q26 : A metallic atom loses its valence electron to form a/an _________?

A: an anion B: a cation C: an anion – cation D: none of these

Q27 : An acid-Base Reaction is always a/an __________?

A: Endothermic B: Exothermic C: Fission D: Fusion

Q28 : Which of the following statement is correct ?

A: size of Cl atoms > Cl- ion B: size of Na+ ion < Na atom C: size of Na atom < Na+ ion D: Cl- < Na+

Q29 : Which one of the following statement is correct for urea ?

A: it is a synthetic fertilizer B: it is a natural fertilizer C: it provides micronutrients to the plants D: it is an inorganic water soluble compound

Q30 : Which statement is incorrect ?

A: All the metals are good conductor of electricity B: All the metals are good conductor of heat C: All the metals form positive ions D: All the metals form acidic oxides

Q31 : Atom is the smallest particall which is_________?

A: Indivisible B: Divisible C: Both D: None of these

Q32 : __________ is one of the allotropic modifications of carbon.

A: Silicon B: Diamond C: Iodine D: Graphite

Q33 : When the radiation of light is passed through a prism, it undergoes __________?

A: reflection B: interference C: diffraction D: refraction

Q34 : Petra means ______ ?

A: Petrol B: Sediment C: Rock D: Fuel

Q35 : Petra means ______ ?

A: Petrol B: Sediment C: Rock D: Fuel

Q36 : The radiations with highest speed are _______.

A: Alpha radiations B: Gamma radiations C: Beta radiations D: AOT

Q37 : The radiations with negative charge are________.

A: Alpha radiations B: Gamma radiations C: Beta radiations D: positron

Q38 : Which one of the following results in the discovery of proton.

A: Cathode rays B: Canal rays C: x rays D: Alpha rays

Q39 : Nitrate (NO3) ions are obtained by the process of __________?

A: Nitrification B: Fermentation C: Denitrification D: None of these

Q40 : Hookworm is a parasitic worm that infects ______?

A: large intestine B: liver C: lungs D: small intestine

Q41 : Who discovered carbohydrates fats and proteins?

A: William Prout B: Jons Jacob Berzelius C: Anselme Payen D: Walter Bradford Cannon

Q42 : Milk tastes sour when kept in the open for sometime due to the formation of __________?

A: lactic acid B: citric acid C: acetic acid D: carbonic acid

Q43 : Soap is prepared by boiling caustic soda with ___________?

A: Alcohol B: Kerosene oil C: Glycerine D: Fats

Q44 : What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ?

A: Radium dating B: Uranium dating C: Carbon dating D: Deuterium dating

Q45 : Where does the oxygen that keeps us alive come from?

A: Carbon dioxide B: Carbonates absorbed from soil C: Oxides of minerals D: Water

Q46 : The radio-active element used in heart pacemakers is ___________?

A: Uranium B: Deuterium C: Plutonium D: Radium

Q47 : Optic fibres are used in :

A: CAT scans B: X-ray photos C: Ultrasound scans D: Endoscopy

Q48 : The snow on the mountains does NOT melt all at once when it is heated by the sun because:

A: it becomes very hard B: it reflects most of the heat from the sun C: it has a low specific heat capacity D: it has a high latent heat of fusion

Q49 : The source of the Sun’s energy is the process of ____________?

A: Photoelectric emission B: Nuclear fission C: Nuclear fusion D: Thermionic emission

Q50 : Main use of salt in diet is to : ___________?

A: ease the process of cooking B: increase the taste C: produce small amount of hydrochloric acid required for digestion D: inclease solubility of food particles in water

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Chemistry MCQs with Answers – Free Bio MCQs Test for All Topics

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Chemistry MCQs with Answers – Free Bio MCQs Test for All Topics

Looking for Chemistry MCQs with answers? Get topic-wise Bio MCQs tests for NEET, MDCAT, and competitive exams. Practice now and test your knowledge with educatehow.com

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