9th Chemistry Glossary Chemistry Terminologies mcqs test

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1. .......... The Process in which a bigger molecule breaks into two or more simoler Units.

Double bond

Dissociation

None of them

Distillation

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2. ........... In an electrochemical cell or electrolytic cell, the anode is the electrode where oxidation takes place.

Atmosphere

Anion

Anode

None of them

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3. ............. A substance which can accept a proton , H from an acid

Aufbau principale

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Base

Amphoteric substance

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4. ............. Group IIA Elements.

Alkali Metals

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Allotrope

Alkaline Earths

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5. ...............Water soluble hydroxide of one of the alkali metals.

Anode

Alkali

None of them

Acid

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6. An organic compound containing the CHO group

None of them

Amalgam

Aldehyde

Element

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7. .......,...see Daniel cell.

Gamma rays

Free Cell

None of them

Galvanic Cell

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8. .............. Solids that have indistinct Shapes , because their particle arrangements lack order.

None of them

Alloy

Amorphous Solids

Alpha particles

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9. ........... One of the set of seven units on which the SI system is based.

None of them

Base

Base Unit

Beta particles

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10. .......... A substance that resists changes in pH when moderate amounts of Acid or base are added.

Calorie

Buffer

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Catalyst

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11. .........the substance dissolved in a solvent to form a Solution ,its quantity in the solution is always laser.

Solution

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Solvent

Solute

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12. ............the outer most shell of electrons .

Vapour shell

Valance shell

Vander shell

None of them

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13. .......... The Process in which a bigger molecule breaks into two or more simoler Units.

Electrolyte

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Electrode

Electrolysis

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14. .........a phase change wher by a solid passes directly into the gas phase without melting.

Suplimation

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Solution

Sublimation

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15. .............the energy liberated when an element acquires an electron to form an anion.

Electron

Electronegativity

Electron affinity

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16. ............ The Smallest particle of an element which can take part in chemical reactions and display the chemical properties of that element.

Atomic Mass

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Matter

Atom

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17. .............the Branch of analytical chemistry that involves identifying , Elements, compounds and ions in samples of unknown or uncertain

Quantum analysis

Quantative analysis

Qualitative analysis

None of them

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18. ............. The atomic Number of an element is the number of protons in its nucleus.

Atomic Mass Unit

Atomic Mass Number

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Atomic Number

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19. .........a pure substance that consists of two or more elements chemically combined in fixed proportions .

Concentration

Covelant bond

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Compound

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20. ........the State of an atom where all electrons have the minimum energy .

Ground State

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Free State

Plane State

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