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Q1. Assertion (A): Cellulose is used in making shatter proof glass. Reason (R}: Polysaccharides are not soluble in water.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q2. Consider the following statements: (1) Liquefied Natural Gas (LNG) is liquefied under extremely cold temperaturs and high pressure to facilitate storage or transportation in specially designed vessels. (2) First LNG terminal in India was built in Hassan. (3) Natural Gas Liquids (NGL) are separated from LPG and these include ethane, propane, butane and natural gasoline. Which of the statements given above is/are correct?

1 only

1 and 3

2 and 3

1, 2 and 3

Q3. Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

Steel > Mercury > Gold

Steel > Gold > Mercury

Gold > Mercury > Steel

Gold > Steel > Mercury

Q4. Assertion (A): The main constituent of the Liquefied Petroleum Gas is Methane. Reason {R} : Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q5. Consider the following statements: (1) During the process of Osmosis, the solvent travesls from the concentrated solution to the dilute solution. (2) In the Reverse Osmosis, external pressure is applied to the dilute solution. Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

Q6. Consider the following statements: (1) Anhydrous sodium carbonate is commonly known as baking soda. (2) Baking Soda is used in fire extinguishers. (3) Bleaching Powder is manufactured in Hasenclever plant. Which of the statements given above is/are correct?

1, 2 and 3

2 and 3 only

3 only

1 and 2

Q7. Consider the following statements: (1) Baking Soda is used in fire extinguishers. (2) Quicklime is used in the manufacture of glass. (3) Gypsum is used in the manufacture of Plaster of Paris. Which of the statements given above is/are correct?

1 and 2

2 and 3 only

1 only

1, 2 and 3

Q8. Match the following Fuel Gases (in alphabets) with their major constituents (in numbers): (A) CNG (B) Coal Gas (C} LPG (D) Water Gas ..... (1) Carbon monoxide, Hydrogen. (2) Butane, Propane. (3) Methane, Ethane. (4) Hydrogen, Methane, Carbon Monoxide.

A2, B1, C3, D4

A3, B4, C2, D1

A2, B4, C3, D1

A3, B1, C2, D4

Q9. Standard 18 carat gold sold in the market contains…….

82 parts gold and 18 parts other metals.

18 parts gold and 82 parts other metals.

18 parts gold and 6 parts other metals

9 parts gold and 15 parts other metals.

Q10. Salts of which of the following elements provide colours to fireworks?

Zinc and Sulphur

Potassium and Mercury

Strontium and Barium

Chromium and Nickel

Q11. With reference to ionic compounds, consider the following statements: (1) Ionic compounds are insoluble in alcohol. (2) Ionic compounds in the solid state are good conductors of electricity. Which of these statements is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

Q12. Which of the following statements is NOT correct?

The presence of NaCl increases the rate of setting of Plaster of Paris

Gypsum is added to the cement to slow down its rate of setting.

All alkaline earth metals form hydrated salts

Barium and Strontium are found free in nature.

Q13. With reference to our country, which one of the following statements is NOT correct?

IPCL is India's largest petrochemical company

RIL is the largest private sector company in India

MTNL is listed on NYSE

BSNL is the first telecom service organisation in India to launch a nationwide celllular service at one time.

Q14. Regarding the atom of a chemical element, the magnetic quantum number refers to….

orientation

shape

size

spin

Q15. Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group. Reason {R}: In a group, the atomic radii generally increase from top to bottom.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q16. Consider the following statements: (1) Molasses is a by product of sugar production process. (2) Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories. (3) Sugar can only be produced from sugarcane as the raw material. Which of these statements are correct?

1 and 2

2 and 3 only

1 and 3

1, 2 and 3

Q17. Which one of the following statements is correct?

Liquid Sodium is employed as a coolant in nuclear reactors

Calcium Carbonate is an ingredient of tooth paste

Bordeaux mixture consists of Sodium sulphate and lime

Zinc amalgams are used as a dental filling.

Q18. Consider the following statements: The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is (1) To keep the washing powder dry (2) To maintain the alkalinity of the powder. Which of these statements is/are correct?

Only 1

Only 2

Both 1 and 2

Neither 1 nor 2

Q19. Which one of the following is produced during the formation of photochemical smog?

Hydrocarbons

Nitrogen Oxide

Ozone

Methane

Q20. Assertion (A): Synthetic detergents can lather well in hard water. Reson (R}: Synthetic detergents form soluble calcium and magnesium salts with hard water.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q21. Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?

Methane, ethane, propane and butane

Propane, butane, ethane and methane

Butane, ethane, propane and methane

Butane, propane, ethane and methane

Q22. Consider the following statements with reference to the Periodic Table of Chemical elements: (1) Ionisation potential gradually decreases along a period. (2) In a group of elements, electron affinity decreases as the atomic weight increases. (3) In a given period, electronegativity decreases as the atomic number increases. Which of these statements is/are correct?

1 only

2 only

1 and 3

2 and 3

Q23. An aqueous solution of copper sulphate is acidic in nature because the salt undergoes

Dialysis

Electrolysis

hydrolysis

Photolysis

Q24. A radioactive substance has a half life of four months. Three fourths of the substance would decay in ....

3 months

4 months

8 months

12 months

Q25. Assertion (A): A chemical reaction becomes faster at higher temperatures. Reason {R}: At higher temperatures, molecular motion becomes more rapid.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q26. Which one of the following is NOT radioactive?

Astatine

Francium

Tritium

Zirconium

Q27. Most of the explosions in mines occur due to the mixing of ....

Hydrogen with oxygen

Oxygen with acetylene

Methane with air

Carbon dioxide with ethane

Q28. Match the following in List I (in alphabets) with List II (in numbers): (A) German Silver (B) Solder (C} Bleaching Powder (D) Hypo ..... (1) Tin (2) Nickel (3) Sodium (4) Chlorine.

A1, B2, C4, D3

A2, B1, C3, D4

A1, B2, C3, D4

A2, B1, C4, D3

Q29. Which of the following is/are the characteristic/s of Indian Coal? (1) High ash content (2) Low sulphur content and (3) Low ash fusion temperature.

1 and 2 only

2 only

1 and 3 only

all of them

Q30. Aluminium surfaces are often ' anodized '. This means the deposition of a layer of .....

chromium oxide

Aluminium oxide

Nickel Oxide

Zinc oxide

Q31. Assertion (A): Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason {R}: Ammonia can be liquified at ambient temperatures at low pressures.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q32. Which one of the following materials is very hard and very ductile?

Carborundum

Tungsten

Cast Iron

Nichrome

Q33. Assertion (A): To dilute sulphuric acid, the acid is added to water and not water to the acid. Reason (R}: Specific heat of water is quite large.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is flase but R is true

Q34. Match the following Naturally Occurring substances (in alphabets) with the elements (in numbers): (A) Diamond (B) Marble (C} Sand (D) Ruby ..... (1) Calcium (2) Silicon (3) Aluminium (4) Carbon

A3, B1, C2, D4

A4, B2, C1, D3

A2, B1, C3, D4

A4, B1, C2, D3

Q35. The water pollution in river is measured by the dissolved amount of ...

Chlorine

Ozone

Nitrogen

Oxygen

Q36. Match the following chemicals (in alphabets) with their area of utilization (in numbers): (A) Potassium Bromide (B) Potassium Nitrate {C} Potassium Sulphate (D) Monopotassium tartarate ..... (1) Fertilizer (2) Photography (3) Bakery (4) Gunpowder.

A2, B4, C1, D3

A2, B4, C3, D1

A4, B2, C3, D1

A4, B2, C1, D3

Q37. Which of the following elements is essential for the constrution of nuclear reactors?

Zirconium

Tungsten

Nickel

Cobalt

Q38. Consider the following statements: Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to ...(1) Act as a reducing agent. (2) Remove Silica associated with the Iron ore. (3) Function as fuel to supply heat. (4) Act as an oxidising agent. Of these statements ..... are correct

1 and 2

2 and 4

1 and 3

3 and 4

Q39. Assertion (A): Phenyl is used as a household germicide. Reason {R}: Phenyl is a phenol derivative and phenol is an effective germicide.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

Q40. Assertion {A}: Sodium metal is stored under Kerosene. Reason {R}: Metallic sodium melts when exposed to air.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

Q41. Consider the following statements about acetylene: (1) It is used in welding industry. (2) It is a raw material for preparing plastics. (3) It is easily obtained by mixing silicon carbide and water. Of these statements ....

1 and 2 are correct

1 and 3 are correct

2 and 3 are correct

1, 2 and 3 are correct

Q42. Match the following common names of chemicals (in alphabets) with their actual chemical terminology (in numbers): (A) Blue Vitriol (B) Epsom Salt {C} Baking Soda (D) Caustic Soda. ..... (1) Sodium Bicarbonate (2) Sodium Hydroxide (3) Magnesium Sulphate (4) Copper Sulphate

A3, B4, C2, D1

A4, B3, C2, D1

A3, B4, C1, D2

A4, B3, C1, D2

Q43. Which one of the following is an active component of oil of clove?

Menthol

Eugenol

Methanol

Benzaldehyde

Q44. The most reactive among the halogens is .....

Fluorine

Chlorine

Bromine

iodine

Q45. Which one of the following is paramagnetic in nature?

iron

hydrogen

oxygen

nitrogen

Q46. Which one of the following has the highest fuel value?

Hydrogen

Charcoal

Natural gas

Gasoline

Q47. Which one of the following is used as an anti-freeze for the automobile engines?

Propyl alcohol

ethanol

methanol

ethylene glycol

Q48. Physico-chemical characteristics of water in water sources undergo changes due to ....

aquatic macrophytes

aquatic fungi

effluents

evapotranspiration

Q49. Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and alo have high hardness and abrasion resistance?

Aluminium

Chromium

Nickel

Tungsten

Q50. Which one of the following fuels causes minimum environmental pollution?

Diesel

Coal

Hydrogen

Kerosene

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