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.

Distillation

None of them

Double bond

Dissociation

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

Concentration

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Compound

Covelant bond

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

None of them

Calorie

Catalyst

Buffer

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

Qualitative analysis

Quantative analysis

Quantum analysis

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

Anode

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Alkali

Acid

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6. ............. Group IIA Elements.

Allotrope

Alkali Metals

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Alkaline Earths

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

Free Cell

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Gamma rays

Galvanic Cell

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

Suplimation

Sublimation

Solution

None of them

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9. ............the outer most shell of electrons .

None of them

Vapour shell

Vander shell

Valance shell

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

Solution

Solute

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Solvent

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

Atomic Mass Unit

Atomic Mass Number

Atomic Number

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

Amorphous Solids

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Alpha particles

Alloy

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

Electron affinity

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Electronegativity

Electron

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

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Aufbau principale

Base

Amphoteric substance

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16. An organic compound containing the CHO group

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Amalgam

Element

Aldehyde

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

None of them

Base Unit

Beta particles

Base

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

Anion

Anode

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Atmosphere

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

Electrode

Electrolysis

None of them

Electrolyte

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