Which of the following is a chemical change? (a) Evaporation of water (b) Burning of candle (c) Glowing of an electric bulb (d) Liquefaction of air

Which of the following is a chemical change? (a) Evaporation of water (b) Burning of candle (c) Glowing of an electric bulb (d) Liquefaction of air
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Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. (1) small current carrying wire (2) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Last Answer : (3) optical fibre Explanation: An endoscope can consist of a rigid or flexible tube and a light delivery system to illuminate the organ or object under inspection. The light source is normally outside the ... in the case of rigid endoscopes or a bundle of fiber optics in the case of a fiberscope.

Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. (1) small current carrying wire (2) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution 

Last Answer : optical fibre

Why would an ordinary, white screw-in flourescent bulb start glowing entirely in a bright pinkish lavender color?

Description : Why would an ordinary, white screw-in flourescent bulb start glowing entirely in a bright pinkish lavender color?

Last Answer : answer:It’s gonna esplode!!! Actually I have no idea

When a light bulb is glowing which form of energy goes into the bulb Which form of energy leave it?

Description : When a light bulb is glowing which form of energy goes into the bulb Which form of energy leave it?

Last Answer : The energy that goes in is electrical energy; the energy thatleaves it is visible light, as well as heat.

What kind of change in candle burning ?

Description : What kind of change in candle burning ?

Last Answer : Candle burning is a chemical change.

For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because (A) Water has a high latent heat of evaporation (B) Lewis number is close to unity (C) They are always equal under all circumstances

Description : For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because (A) Water has a high latent heat of evaporation (B) Lewis number is close to unity (C) They are always equal under all circumstances

Last Answer : (A) Water has a high latent heat of evaporation

Two electric bulbs rated 50 W and 100 W are glowing at full powr, when used in parallel with a battery of emf 120 V and internal resistance 10 `Omega`

Description : Two electric bulbs rated 50 W and 100 W are glowing at full powr, when used in parallel with a battery of emf 120 V and internal resistance 10 `Omega`

Last Answer : Two electric bulbs rated 50 W and 100 W are glowing at full powr, when used in parallel with a battery of emf 120 V ... power, is A. 6 B. 4 C. 2 D. 8

On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

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Last Answer : a) oxygen

Where does the wax from a burning candle go?

Description : Where does the wax from a burning candle go?

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Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and gas evolved Y (a). X- Sulphuric acid and Y- Oxygen gas (b). X- Hydrochloric acid and Y- Oxygen gas (c). X- Sulphuric acid and Y- Hydrogen gas (d). X- Hydrochloric acid and Y- Hydrogen gas

Description : Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and ... (c). X- Sulphuric acid and Y- Hydrogen gas (d). X- Hydrochloric acid and Y- Hydrogen gas

Last Answer : (c). X- Sulphuric acid and Y- Hydrogen gas

When an electric bulb breaks, there is a mild bang due to (a) the chemical reaction between the enclosed gases (b) the compressed gases rushing out suddenly (c) the air rushing in to fill the evacuated space (d) some other unknown reason

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Last Answer : Ans:(c)

What is a burning candle is in the process of transforming?

Description : What is a burning candle is in the process of transforming?

Last Answer : Chemical energy into light and heat

The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning

Description : The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning

Last Answer : a) luminous

Air refrigeration cycle is used in (a) domestic refrigerators (b) gas liquefaction (c)commercial refrigerators (d) Chillers

Description : Air refrigeration cycle is used in (a) domestic refrigerators (b) gas liquefaction (c)commercial refrigerators (d) Chillers

Last Answer : Ans: b

Air refrigeration cycle is used in (a) domestic refrigerators (b) commercial refrigerators (c) air conditioning (d) gas liquefaction

Description : Air refrigeration cycle is used in (a) domestic refrigerators (b) commercial refrigerators (c) air conditioning (d) gas liquefaction

Last Answer : Ans: d

Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C. (A) -83 (B) -183 (C) -196 (D) -218

Description : Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C. (A) -83 (B) -183 (C) -196 (D) -218

Last Answer : (B) -183

How can you change your name's color, and cause it glowing, on a wiki on Fandom?

Description : How can you change your name's color, and cause it glowing, on a wiki on Fandom?

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Black liquor is converted into white liquor by (A) Evaporation and burning the concentrate followed by causticisation of products (B) Multi-effect evaporation only (C) Selective liquid extraction (D) Extractive distillation

Description : Black liquor is converted into white liquor by (A) Evaporation and burning the concentrate followed by causticisation of products (B) Multi-effect evaporation only (C) Selective liquid extraction (D) Extractive distillation

Last Answer : (A) Evaporation and burning the concentrate followed by causticisation of products

Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal. (A) Burning (B) Intensive oxidation (C) Evaporation (D) None of these

Description : Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal. (A) Burning (B) Intensive oxidation (C) Evaporation (D) None of these

Last Answer : Option B

Is burning magnesium in the air a chemical change?

Description : Is burning magnesium in the air a chemical change?

Last Answer : Yes. Burning anything is a chemical change.

The ease of liquefaction of noble gases decreases in the order

Description : The ease of liquefaction of noble gases decreases in the order

Last Answer : The ease of liquefaction of noble gases decreases in the order A. `He gt Ne gt Ar gt Kr gt Xe` B. `Xe gt Kr ... gt Ne` D. `Ar gt Kr gt Xe gt He gt Ne`

6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Description : 6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (C) Merely compressing it beyond critical pressure

Dry ice (solidified CO2 ) is used for the (A) Storage & shipment of frozen foods and ice-creams (B) Liquefaction of permanent gases (C) Liquefaction of natural gas (D) None of these

Description : Dry ice (solidified CO2 ) is used for the (A) Storage & shipment of frozen foods and ice-creams (B) Liquefaction of permanent gases (C) Liquefaction of natural gas (D) None of these

Last Answer : (A) Storage & shipment of frozen foods and ice-creams

Claude process of gas liquefaction employs (A) Merely compression of gas beyond its critical pressure (B) Joule-Thomson expansion cooling (C) Heat exchange with colder stream (D) Adiabatic expansion against a piston or in a turbine

Description : Claude process of gas liquefaction employs (A) Merely compression of gas beyond its critical pressure (B) Joule-Thomson expansion cooling (C) Heat exchange with colder stream (D) Adiabatic expansion against a piston or in a turbine

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Linde process of gas liquefaction employs (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Adiabatic expansion against a piston or in a turbine (D) Merely compressing the gas beyond its critical pressure

Description : Linde process of gas liquefaction employs (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Adiabatic expansion against a piston or in a turbine (D) Merely compressing the gas beyond its critical pressure

Last Answer : (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

Favourable conditions for the liquefaction of gases in general are (A) High pressure & low temperature (B) Low pressure & high temperature (C) High pressure & high temperature (D) Low pressure & low temperature

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Grams of butane (C4H10 ) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be (A) 580 (B) 640 (C) 1160 (D) Data insufficient; can't be computed

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Claude gas liquefaction process employs cooling (A) At constant pressure (B) By throttling (C) By expansion in an engine (D) None of these

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The principle applied in liquefaction of gases is (A) Adiabatic expansion (B) Joule-Thomson effect (C) Both (A) and (B) (D) Neither (A) nor (B)

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Last Answer : (C) Both (A) and (B)

Linde gas liquefaction process employs cooling (A) By throttling (B) By expansion in an engine (C) At constant pressure (D) None of these

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Last Answer : (A) By throttling

Claude's liquefaction process employs the cooling of gases by (A) Expansion in an engine (B) Following a constant pressure cycle (C) Throttling (D) None of these

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