9th Chemistry Glossary Chemistry Terminologies mcqs test

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

Base Unit

Beta particles

None of them

Base

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

Suplimation

Solution

None of them

Sublimation

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

None of them

Alkali

Acid

Anode

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

None of them

Free State

Ground State

Plane State

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

Atomic Mass

Atom

Matter

None of them

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

None of them

Atmosphere

Anode

Anion

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

Aufbau principale

None of them

Amphoteric substance

Base

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

None of them

Electrolysis

Electrode

Electrolyte

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

Qualitative analysis

Quantative analysis

Quantum analysis

None of them

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

Atomic Number

Atomic Mass Unit

Atomic Mass Number

None of them

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11. ............. Group IIA Elements.

None of them

Alkali Metals

Alkaline Earths

Allotrope

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

Electron affinity

Electron

None of them

Electronegativity

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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

None of them

Solvent

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

Dissociation

None of them

Distillation

Double bond

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15. ............the outer most shell of electrons .

Vapour shell

None of them

Valance shell

Vander shell

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16. An organic compound containing the CHO group

Element

Aldehyde

None of them

Amalgam

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17. .......,...see Daniel cell.

Galvanic Cell

Gamma rays

Free Cell

None of them

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

None of them

Alpha particles

Amorphous Solids

Alloy

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

None of them

Compound

Concentration

Covelant bond

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

Calorie

None of them

Catalyst

Buffer

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