9th Chemistry Glossary Chemistry Terminologies mcqs test

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

None of them

Catalyst

Buffer

Calorie

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2. An organic compound containing the CHO group

Element

Aldehyde

Amalgam

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3. ............. Group IIA Elements.

Allotrope

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Alkaline Earths

Alkali Metals

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

Alloy

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Amorphous Solids

Alpha particles

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

Electron affinity

Electronegativity

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Electron

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

Solution

Sublimation

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Suplimation

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

Double bond

Distillation

Dissociation

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

Anode

Anion

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Atmosphere

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

Matter

Atom

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Atomic Mass

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10. .......,...see Daniel cell.

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Galvanic Cell

Free Cell

Gamma rays

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

Beta particles

Base

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Base Unit

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

Plane State

Ground State

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Free State

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

Solution

Solute

Solvent

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

Concentration

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Covelant bond

Compound

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

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Amphoteric substance

Aufbau principale

Base

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

Atomic Mass Unit

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Atomic Mass Number

Atomic Number

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17. ............the outer most shell of electrons .

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Vapour shell

Valance shell

Vander shell

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

Electrolysis

Electrolyte

Electrode

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

Alkali

Anode

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Acid

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

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Quantum analysis

Quantative analysis

Qualitative analysis

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