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1. The shar'i definition of fasting is to abstain from certain things. That is to eat and drink and have, that is, to abstain from using these things from dawn to dusk.
2. Fasting is obligatory on every sane, mature and healthy Muslim.
3. Fasting is not obligatory on non-Muslims, minors and insane people.
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7. The following are the words for the intention of fasting: "وبصوم غدنویت من شھررمضان"
8. But according to the critics, it has not been proved by any hadith narration.
9. Eating or drinking something while fasting will break the fast if it is done with intention.
10. Fasting will also be broken if water gets into the throat while rinsing or putting water in the nose.

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9th Chemistry MCQs Sindh Board

Q.1: Sodium hydroxide is prepared at large scale by the following methods.?

1. Saponification method
2. Hydrolysis
3. Electrolytes process
4. None of these

C

Q.2: Sodium hydroxide at 318 ^oC:?

1. Does not melt
2. Melts to a clear liquid
3. Melts with decomposition
4. None of these

B

Q.3: Carbon dioxide and sodium hydroxide react to give:?

1. Sodium and carbon monoxide
2. Sodium carbonate only
3. Sodium carbonate and water
4. Sodium metal and Water

C

Q.4: When sodium hydroxide reacts with ammonium chloride it liberates gas:?

1. Hydrogen
2. Ammonia
3. Oxygen
4. Carbon dioxide

B

Q.5: Sodium hydrogen carbonate used in medicine which of the effects it causes in the stomach?

1. Increase the basicity
2. Increase the acidity
3. Decrease the basicity
4. Neutralize the acidity

D

Q.6: The product / products obtained by reaction of sodium carbonate with carbon dioxide in aqueous medium is / are:?

1. Sodium oxide
2. Sodium carbonate and water
3. Sodium Hydroxide
4. Sodium hydrogen carbonate

D

Q.7: Carbonates and bicarbonates of sodium are manufactured by:?

1. Ammonia solvay process
2. Habers method
3. Ostwalds process
4. Contact method

A

Q.8: Detergents are cleansing agents prepared from:?

1. Hydrocarbon and a sulphonate
2. Sulphonate only
3. Hydrocarbons only
4. Water soluble sodium salts

A

Q.9: The material which softens on heating and hardens on cooling come under the class:?

1. Formica
2. Thermoplastic
3. Bakelite
4. Thermosetting plastic

D

Q.10: The class of plastic that can only be heated once before they set on cooling is?

1. Cellulose nitrate
2. Cellulose acetate
3. Thermoplastic
4. Thermosetting plastic

D

Q.11: The polymer which is used in the manufacture of bags for shipping purpose is:?

1. Araldite
2. Expose resin
3. Poly vinyl chloride
4. Poly ethylene

D

Q.12: Cameras, radios, telephone sets, etc are prepared from:?

1. Cellulose nitrate
2. Poly vinyl chloride
3. Bakelite
4. Polythene

C

Q.13: The pigments used to produce white colour are:?

1. Ferric oxide
2. Chromium oxide
3. Zink sulphate
4. Oxides of iron

A

Q.14: Varnishes are used:?

1. Without pigments
2. Without resins
3. Without driers
4. With pigments

A

Q.15: Which of the following constituents of shoe polish issued to provide shinning to the shoes:?

1. Bees wax
2. Soap
3. Sodium hydroxide
4. Pearl ash

A

Q.16: The common ingredients used in black and brown show polishes is?

1. Turpentine Oil
2. Pearl ash
3. Animal Charcoal
4. Nigrosine oil

A

Q.17: A mixture of infusion of gall nuts with ferrous sulphate and certain proportion of hydrochloric acid produces:?

1. Printing Ink
2. Black ink
3. Blue Ink
4. Marking Ink

B

Q.18: Red ink is normally prepared from:?

1. Linseed Oil
2. Brazil Wood
3. Silver Nitrate
4. Oak Plant

B

Q.19: Addition of salts and sugar:?

1. Preserve the food
2. Help to grow micro-organisms
3. Spoil and food
4. Decreases the shelf life of food

A

Q.20: The radiation paned through food to preserve it are comprised of:?

1. Beta rays only
2. Alpha and Beta - rays only
3. Gyma - rays
4. Alpha and Gyma rays

D

Q.21: Soda ash has special role in the manufacture of?

1. Fabrics
2. Textile
3. Soap
4. glass products

C

Q.22: Which one of the following is used domestically as cleansing agent?

1. NaCl
2. NaOH
3. Na₂HCO₃
4. Na₂CO₃

D

Q.23: Sodium silicate and washing soda is added in laundry saps to:?

1. increases the strength
2. enhance the colour
4. Increase the cleansing ability

D

Q.24: Polymerization of phenol and formaldehyde results in the formation of:?

1. Bakelite
2. Exposy resin
3. PVC
4. Polythene

C

Q.25: A thinner drier linseed oil and a resin are the components of:?

1. water paints
2. emulsion
3. Oil paints
4. Distemper

C

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Chemistry Ninth Sindh Board Notes

Q.1: The branch of chemistry, which deals with the compounds of carbon is called:?

1. Analytical chemistry
2. Inorganic chemistry
3. Physical chemistry
4. Organic chemistry

D

Q.2: The first synthetic organic compound is:?

1. Acetic acid
2. Ethane
3. Urea
4. Methane

C

Q.3: Which is pure carbon:?

1. None of these
2. Coal gas
3. Coke
4. Coaltar

C

Q.4: Residue left after fractional distillation of coaltar:?

1. Pitch
2. Coke
3. Matte
4. None of these

C

Q.5: Natural gas mainly consists of:?

1. Butane
2. Ethane
3. Propane
4. Methane

D

Q.6: Fraction of petroleum containing 10-13 carbons, and its boiling range 150^oC-230^oC:?

1. Light oil
2. Kerosene
3. Gasoline
4. Natural gas

B

Q.7: Fraction of petroleum containing C₂₁ – C₄₀ boiling range is above 400^oC, is:?

1. Bitumen
2. Praffin wax
3. Light oil
4. Heavy oil

D

Q.8: The oils that have been carefully purified and decolourized, act as mild laxative are:?

1. Heavy oil
2. Kerosene
3. Gasoline
4. Light oil

D

Q.9: The process in which the octane rating of gasoline can be increased, is called:?

1. Reforming
2. isomerism
3. Refining
4. Cracking

A

Q.10: A series of compounds, in which each member differs from the preceding one by a constant ratio of (CH₂) methylene group, is called:?

1. Homologous series
2. None of these
3. Isomerism
4. Monologous series

A

Q.11: Isomerism in which the compounds possess the same molecular formula but different arrangement of carbon atoms in the hydrocarbon Chain is called:?

1. Functional isomerism
2. Metamerism
3. Position isomerism
4. Chain isomerism

D

Q.12: A process that breaks large molecules into smaller one, is called:?

1. None of these
2. Reforming
3. Refining
4. Cracking

D

Q.13: Compounds which contain only carbon and hydrogen elements, are called:?

1. Halides
2. carbohydrates
3. Hydrocarbons
4. None of these

C

Q.14: The hydrocarbons which contain one or more double or triple bonds, are called:?

1. Halogens
2. Paraffin
3. Saturated hydrocarbons
4. Unsaturated hydrocarbons

D

Q.15: The first member of alkene series is:?

1. Ethyne
2. Methane
3. Ethene
4. Ethane

C

Q.16: The hydrocarbons in which carbon atoms are arranged in rings, are called:?

1. Aromatic
2. Ali cyclic
3. Aliphatic
4. None of these

B

Q.17: The quality of petrol is measured by:?

1. Reforming
2. Cracking
3. Octane number
4. Decane number

C

Q.18: General formula for alkane is:?

1. C_nH_2n-2
2. C_nH_2n+1
3. C_nH_2n
4. C_nH_2n+2

D

Q.19: The first member of Alkyne series is:?

1. Ethene
2. Methane
3. Acetylene
4. Ethane

C

Q.20: The number of isomers in butane is:?

1. 3
2. 1
3. 2
4. 4

C

Q.21: An atom or group of atoms present in a molecule and is responsible for chemical behaviour is called:?

1. Aryl group
2. Alkenyl group
3. Alkyl group
4. Functional group

D

Q.22: Iso-butane possesses:?

1. Functional isomerism
2. Metamerism
3. Position isomerism
4. Chain isomerism

D

Q.23: Preparation of ethane from ethyl Alcohol is an example of:?

1. Hydration
2. Halogenation
3. Dehalogenation
4. Dehydration

D

Q.24: The Hydrocarbons which possess double bond in their molecules are called:?

1. Paraffins
2. Alkynes
3. Alkanes
4. Alkenes

D

Q.25: The alkanes are also called:?

1. Acetylenes
2. Paraffins
3. Olefins
4. Alkynes

D

9th Chemistry Unit 16 Metals And Their Extraction MCQs Sindh Board

 9th Grade Chemistry Chapter 16 Metals & Their Extraction Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 16 Metals And Their Extraction Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

9th Chemistry MCQs

Q.1: FeCO₃ is the formula of?

1. Azurite
2. Limonite
3. Magnetite
4. Spathic

D

Q.2: Iron ores are found in?

1. Chitral
2. Dadu
3. Attock
4. Tharparker

A

Q.3: Formula of limonite is?

1. Fe₃O₄
2. Fe₂OH₂
3. Fe₂O₃
4. Fe₂O₃.H₂O

D

Q.4: Cu₂S.CuS.FeS is the formula of?

1. Copper Phrite
2. Cuperite
3. Malochite
4. Bornite

D

Q.5: Azurite is an ore of?

1. Iron
2. Aluminum
3. Copper
4. Chromium

C

Q.6: Copper has been known since to?

1. Gold age
2. Brass age
3. Stone age
4. Bronze age

D

Q.7: Kaolin and Potash Flspar are the ores of?

1. Aluminum
2. Copper
3. Potassium
4. Iron

A

Q.8: Corrundum is the?

1. Oxide ore of Al
2. Sulpahte ore of Al
3. Flouride ore of Al
4. Silicate ore of Al

A

Q.9: FeO.Cr₂O₃ is the formula of?

1. Limonite
2. Haematite
3. Chromite
4. Iron Pyrite

C

Q.10: Na₃AlF₆ is the formula of?

1. Potash mica
2. Cryolite
3. Bauxite
4. Alunite

B

Q.1: Formula of corundum is?

1. Al₂O₃2SiO₂.2H₂O
2. Al₂O₃H₂O
3. AlCI₃
4. Al₂O₃

D

Q.11: ZnS is the formula of?

1. Azurite
2. Zinck Pyrite
3. Zinc blend
4. Zinc Sulphate

C

Q.12: Pig iron contains 0.05-1.5%?

1. Iron
2. Phosphorous
3. Carbon
4. Silica

B

Q.13: %age of carbon in pig iron is?

1. 0.5%
2. 0.05-1.0%
3. 1.2%
4. 3.5-4%

D

Q.14: Copper pyrite ore contains copper?

1. 5%
2. 4%
3. 6%
4. 7%

C

Q.15: CuS is the formula of?

1. Cuperite
2. Copper Pyrite
3. Azurite
4. Copper glance

D

Q.16: Mild steel contains 0.15% to 0.25%.?

1. Iron
2. Sulphur
3. Silicon
4. Carbon

D

Q.17: Tungsten and vanadium are present in?

1. Wrought iron
2. Cask Iron
3. Brass
4. Steel

D

Q.18: Cu₂O is the formula of?

1. Di copper oxide
2. Chalcocite ore
3. Copper pyrite ore
4. Cuperite ore

D

Q.19: Froth floatation process is used for?

1. Smelting of ore
2. Roasting of ore
3. Refining of ore
4. Concentration of ore

D

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 9th Grade Chemistry Chapter 15 Halogens Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 15 Halogens Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

Chemistry MCQs Sindh Board

Q.1: Which of the following is a good organic solvent?

1. CH₂OH and CCI₃
2. DDT and CH₃OH
3. CCl₄ and CHCI₃
4. C₂H₂OH and CH₂Cl₂

C

Q.2: Which are of the following is known as satanic element?

1. Carbon
2. Chlorine
3. Nitrogen
4. Fluorine

B

Q.3: Iodine and its compounds are used in medicines as?

1. Chemical reagent
2. Active reagent
3. Catalyst
4. Components

C

Q.4: Pure chlorine is produced by heating conc. HCI with:?

1. MnO₂
2. KClO₃
3. KMnO₄
4. K₂Cr₂O₇

D

Q.5: Nelsons Cell is used for the production of:?

1. Hydrochloric Acid
2. Hydrogen Chloride
3. Bleaching powder
4. Chlorine Gas

D

Q.6: Which one of the following catches fire on reaction with chlorine?

1. Sodium metal
2. Hydrogen gas
3. Sulphur
4. Phosphorous

D

Q.7: Formula of mustard gas is?

1. CaOCl₂
2. CCl₃NO₂
3. COCl₂
4. C₂H₄Cl₂₂S

D

Q.8: Atomic Number of Iodine is?

1. 9
2. 35
3. 17
4. 53

D

Q.9: (Na₃AIF₆) is the formula of?

1. Flourapatite
2. Cryolite
3. Teflon
4. Fluorspar

B

Q.10: Ethene reacts with chlorine gas to form?

1. 1, 3-dichloro ethane
2. 1, 4-dichloro ethane
3. 1, 2-dichloro ethane
4. Monochloro Ethane

C

Q.11: AgBr is used in:?

1. Pesticides
2. Dyes
3. Photography
4. Fumigants

C

Q.12: Each kg of sea water contains salt NaCI:?

1. 40 g
2. 20 g
3. 30 g
4. 10 g

A

Q.13: Iodine deficiency leads to enlargement of;?

1. Thyroid gland
2. Pituitary gland
3. Parathyroid gland
4. Pineal gland

A

Q.14: PVC is a common:?

1. Rubber
2. Medicine
3. Gas
4. Plastic

D

Q.15: Which one are the most abundant and a very important member of Group VII A.?

1. I₂
2. Br₂
3. F₂
4. Cl₂

D

Q.16: The concentration of HCI in stomach is:?

1. 0.8%
2. 0.5%
3. 0.7%
4. 0.9%

B

Q.17: The reactivity of halogens down the group:?

1. Increases
2. Decreases
3. Remain constant
4. none of them

B

Q.18: Iodine gives violet vapours when it:?

1. Boil
2. Melts
3. Sublimes
4. Freezes

C

Q.19: Chlorine is how many times heavier than air?

1. 4.5
2. 3.5
3. 1.5
4. 2.5

D

Q.20: The most abundant and useful halogen is:?

1. Iodine
2. Fluorine
3. Bromine
4. Chlorine

D