Inorganic Chemistry Multiple Choice Questions With Answers

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Inorganic Chemistry Multiple Choice Questions With Answers

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Today we are sharing an important pdf in hindi Inorganic Chemistry Multiple Choice Questions With Answers Inorganic Chemistry is a significant branch of chemistry dealing with carbon-free compounds. Such compounds are called inorganic compounds. The synthesis, structure, properties, and use of inorganic compounds are studied in inorganic chemistry. A common example of an inorganic compound is sodium chloride (NaCl). The most important molecule, water (H2O), regulates and governs life. Inorganic chemistry helps students to understand the chemistry of elements other than carbon.

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Inorganic Chemistry Multiple Choice Questions

Q1. An anion is,

a) an atom that has gained electrons

b) an atom that has lost electrons

c) a charged molecule

d) a charged element

Correct Answer – A

Q2. Define an element

a) an atom that takes part in chemical reaction

b) a pure substance that consists of only one type of atom

c) different kinds of atoms of similar chemicals

d) an atom that can never be divided into simpler particules

Correct Answer – B

Q3. What is an atomic number of an atom?

a) Number of protons

b) Number of electrons

c) Number of protons and neutrons

d) Number of electrons and protons

Correct Answer – A

Q4. 1H1, 1H2, and 1H3 are all

a) isotopes

b) allotrops

c) group members

d) anisotropes

Correct Answer – A

Q5. Chemical changes are those that

a) take place very fast

b) produce a new substance

c) where electrons are involved

d) where heat is applied

Correct Answer – B

Q6. What is an atomic orbital

a) spot where electron is in an atom

b) a wave for an allowed energy state for an electron in atom

c) A wave for an allowed energy state for an electron in an atom or molecule

d) Sub-shell of an atom.

Correct Answer – C

Inorganic Chemistry Multiple Choice Questions

Q7. What are allotropes?

a) members of the same atom but different neutrons

b) Different forms of the same element

c) Different forms of the same atom

d) Different structures of the same element

Correct Answer – B

Q8. What is octet rule?.

a) When electrons are 8 in an orbital

b) During bond formation, when atoms attain 8 electrons in valence shell electronic configuration.

c) when elements of group 8 (noble gases) are stable

d) having 8 valence electrons

Correct Answer – B

Q9. Define a chemical bond

a) Shortest distance connecting two atoms in a molecule

b) attractive forces that hold two or more atoms together in a molecule

c) the two electrons that attract each other and hold atoms together

d) Shortest distance of approach between two atoms

Correct Answer – B

Q10. Melting point of a substance is?

a) The temperature at which the solid and liquid phases are in equilibrium

b) the temperature where all solid has turned to liquid

c) the temperature when water is ice

d) is 0oC for Ice.

Correct Answer – A

Q11. Electronic configuration

a) the arrangement of electrons in atomic orbitals

b) the presence of electrons in orbitals

c) the shape of electronic orbitals such as s, p, and d-orbitals

d) the act of studying eletrons in an atom

Correct Answer – A

Q12. Isoelectronic species are

a) Atoms having the same amount of current in them

b) Atoms or ions that have the same electronic arrangements

c) Atoms that have the same number of electrons

d) Atoms that have lost all their electrons

Correct Answer – B

Q13. What is an elctrochemical series?

a) series for atoms of same group,

b) The list of elements/compounds when arranged in order of their standard reduction potentials, from most oxidizing to most reducing.

c) The list of atoms when arranged in order of their standard reduction potentials, from most oxidizing to most reducing.

d) members of same period in periodic table.

Correct Answer – B

Q14. The correct ranking of bonds in order of greatest to least bond strength is;

a) covalent, Van der waals, hydrogen,

b) Van der waals, hydrogen, covalent,

c) covalent, hydrogen, Van der waals,

d) hydrogen, Van der waals, covalent

Correct Answer – C

Q15. Covalent bonds are formed by,

a) metals and non-metals,

b) sharing of electrons,

c) transfer of electrons,

d) non-metals alone

Correct Answer – B

Inorganic Chemistry Multiple Choice Questions

Q16. A chemical compound is always,

a) chemically neutral,

b) electrically neutral,

c) both positively and negatively charged,

d) either positively or negatively charged.

Correct Answer – B

Q17. Define a catalyst

a) a substance that increases the rate of a reaction

b) a substance that increases the rate of a reaction but is itself not consumed

c) a substance that produces the desired product faster in a chemical reaction

d) a substance that changes a rate of a reaction.

Correct Answer – B

Q18. Excited state of an atom is when?,

a) one or more electrons are not in the lowest possible enrgy level

b) when an electron leaves the atom

c) when an atom acquires more energy

d) when an atom has more electrons than it needs

Correct Answer – A

Q19. Define an atomic mass unit (AMU) according to the IUPAC.

a) 1 amu = 1/12 the mass of Carbon 12

b) 1 amu = 1/16 the mass of Oxygen 16

c) 1 amu = 1/1 the mass of hydrogen

d) 1 amu = the maximum number of protons in an atom.

Correct Answer – A

Q20. Anode

a) tip of a bulb element

b) electrode of an electrochemical cell where reduction occurs

c) terminal of a dry cell

d) electrode of an electrochemical cell where oxidation occurs

Correct Answer – D

Q1. Which of the mentioned is the formula of Oleum?

a) H2S2O8

b) H2S2O6

c) H2S2O7

d) H2S2O5

Answer: c

Explanation: Oleum – (H2SO4+SO3) which on summing up the like compounds will give H2S2O7.

Q2. Which of the mentioned can be used as raw material to manufacture sulphuric acid?

a) Iron pyrites

b) Elemental Sulphur

c) Hydrogen Sulphide

d) All of the mentioned

Answer: d

Explanation: Iron pyrites (FeS), Elemental Sulphur(S), Hydrogen Sulphur(H2S) all the mentioned has Sulphur so they can be used as raw material to manufacture sulphuric acid.

Q3. Which of the mentioned are constituents of producer gas?

a) CO, N2, H2

b) CO, H2

c) H2, CH4, CO

d) LPG

Answer: a

Explanation: Producer gas is produced from Coke, Air, and Steam as raw materials. So, CO,N2 and H2 will be the consituents.

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Q4. In the manufacture of Acetylene (C2H2) by Wulff Process, Which of the following methods is involved?

a) Heating of copper tube

b) Use of Calcium Carbide

c) Reforming

d) Pyrolsis of hydrocarbons

Answer: d

Explanation: Except option ‘Pyrolsis of hydrocarbons’, The others also yield C2H2 but Wulff process is where Pyrolysis occurs.

Eg: From propane – C3H8 → C2H2 + C2H4 + CH4 + CO + H2 + CO2

Q5. Cryogenics deal with which of the following mentioned?

a) Production and utilization of low temperatures from 0 K to 123K

b) Production and utilization of low temperatures from 0 K to 273.15 K

c) Production and utilization of high temperatures from 273.15Kto 1000K

d) Production and utilization of high temperatures from 273.15K to 500K

Answer: a

Explanation: Cryogenics deal with sub zero temperatures the least mentioned in the options is 0K to 123K.

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Q6. High purity oxygen in used in which of the mentioned cases?

a) Combustion

b) Medical purposes

c) Chemical reactions

d) Oxidation processes

Answer: b

Explanation: Medical purposes need 100% pure oxygen for respiration whereas the mentioned options take up the available free oxygen.

Q7. Linde’s cycle uses which of the following effects?

a) Newton’s law of cooling

b) Fouriers law

c) Joule Thomson cooling

d) Fick’s law

Answer: c

Explanation: Linde’s cycle achieves liquefaction of gases by expansion through a throttle valve adiabatically which is known as Joule-Thomson cooling.

Q8. The three major components that are necessary in a fertilizer are?

a) Na, K, S

b) N, P, S

c) N, Cl, K

d) N, P, K

Answer: d

Explanation: Nitrogen promotes development of stems and leaves, Phosphorus stimulates early growth and accelerates seeding and Potassium is essential for development of grains, sugars etc.

Q9. Ammonia manufactured by Haber’s process uses which of the mentioned as catalyst?

a) Iron

b) Molybdenum

c) Titanium

d) Zinc

Answer: a

Explanation: In Haber’s process, Iron is used as catalyst and Molybdenum is used as promoter.

Q10. Which of the mentioned can be used as an explosive and a fertilizer?

a) Ammonium Carbamate

b) Urea

c) Ammonium Chloride

d) Ammonium Nitrate

Answer: d

Explanation: Ammonium nitrate when exposed to high temperatures or mixed with combustible materials explodes.

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