Soap helps in better cleaning of clothes because - (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Soap helps in better cleaning of clothes because - (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt
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(2) It reduces the surface tension of solution Explanation: Soaps are effective cleaners because they can dissolve and the oil and grease that holds dirt in place. They reduce the surface tension of the solution and enable it to wet things more uniformly. The surfactants in detergents improve water's ability to wet things, spread over surfaces, and seep into dirty clothes fibers. The surfactant molecules help water to get a hold of grease, break it up, and wash it away.
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Soap helps in better cleaning of clothes because (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Description : Soap helps in better cleaning of clothes because (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Last Answer : It reduces the surface tension of solution

Detergents dissolved in water help in cleaning clothes by A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water D. Dissolving dirt

Description : Detergents dissolved in water help in cleaning clothes by A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water D. Dissolving dirt

Last Answer : ANSWER: C

Detergents dissolved in water help in cleaning clothes by-----? A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water (Answer) D. Dissolving dirt

Description : Detergents dissolved in water help in cleaning clothes by-----? A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water (Answer) D. Dissolving dirt

Last Answer : C. Reducing the surface tension of water (Answer)

An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.

An egg sinks in soft water but floats in a concentrated solution of salt because (1) egg absorbs salt from the solution and expands (2) albumin dissolves in salt solution and egg becomes lighter (3) the density of salt solution exceeds the density of eggs (4) water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because (1) egg absorbs salt from the solution and expands (2) albumin dissolves in salt solution and egg becomes lighter (3) the density of salt solution exceeds the density of eggs (4) water has high surface tension

Last Answer : the density of salt solution exceeds the density of eggs

Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst. (A) Stabilisation (B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c

Description : Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in ... B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c

Last Answer : (D) All a, b & c

Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.

Flywheel is an important part of a steam engine because it – (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Description : Flywheel is an important part of a steam engine because it – (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Last Answer : (2) helps the engine in keeping the speed uniform Explanation: A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have a. significant moment of ... the Industrial Revolution, James Watt contributed to the development of the flywheel in the steam engine.

Flywheel is an important part of a steam engine because it - (1) gives strength to the engine (2) accelerates the speed of the engine (3) helps the engine in keeping the speed uniform (4) decreases the moment of Inertia

Description : Flywheel is an important part of a steam engine because it - (1) gives strength to the engine (2) accelerates the speed of the engine (3) helps the engine in keeping the speed uniform (4) decreases the moment of Inertia

Last Answer : (3) helps the engine in keeping the speed uniform

Does dry cleaning get clothes as clean as soap and water?

Description : Does dry cleaning get clothes as clean as soap and water?

Last Answer : answer:As far as different washing intructions on items that are the same fabric, sometimes manufacturers put in dry clean recommended as a failsafe. Meaning there is less likelihood something will go wrong if you dry ... heat maybe kill off any germs? I really have no idea and I do want to know.

Soaps remove dirt by (A) Increasing the surface tension (B) Decreasing wettability (C) Supplying hydrophilic group (D) None of these

Description : Soaps remove dirt by (A) Increasing the surface tension (B) Decreasing wettability (C) Supplying hydrophilic group (D) None of these

Last Answer : (D) None of these

Soap cannot be used with hard water, because (A) Hard water contains sulphate (B) They form insoluble calcium soaps which precipitate (C) They attract back the removed dirt (D) None of these

Description : Soap cannot be used with hard water, because (A) Hard water contains sulphate (B) They form insoluble calcium soaps which precipitate (C) They attract back the removed dirt (D) None of these

Last Answer : (B) They form insoluble calcium soaps which precipitate

(1) waste water released from kitchen Explanation: Sullage is a term used to descibe wastewater that wises as a byproduct of daily human activities such as showering, washing kitchen utensils, and doing the laundry. It is used water that does not contain excreta. Sullage is commonly referred to as gray water that is a mixture of water, soap, detergent, bleach, dirt, and other compounds discarded after use.

Description : (1) waste water released from kitchen Explanation: Sullage is a term used to descibe wastewater that wises as a byproduct of daily human activities such as showering, washing kitchen utensils, and doing ... a mixture of water, soap, detergent, bleach, dirt, and other compounds discarded after use.

Last Answer : A solution is - (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids

Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.

Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects 

Last Answer :  Wool is a bad conductor

Flywheel is an important part of a steam engine because it – (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Description : Flywheel is an important part of a steam engine because it – (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Last Answer : (2) helps the engine in keeping the speed uniform Explanation: A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have a. significant moment of ... the Industrial Revolution, James Watt contributed to the development of the flywheel in the steam engine.

Flywheel is an important part of a steam engine because it - (1) gives strength to the engine (2) accelerates the speed of the engine (3) helps the engine in keeping the speed uniform (4) decreases the moment of Inertia

Description : Flywheel is an important part of a steam engine because it - (1) gives strength to the engine (2) accelerates the speed of the engine (3) helps the engine in keeping the speed uniform (4) decreases the moment of Inertia

Last Answer : (3) helps the engine in keeping the speed uniform

Flywheel is an important part of a steam engine because it : (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Description : Flywheel is an important part of a steam engine because it : (1) accelerates the speed of the engine (2) helps the engine in keeping the speed uniform (3) decreases the moment of inertia (4) gives strength to the engine

Last Answer : helps the engine in keeping the speed uniform

Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat

Description : Endothermic refers to a process that w) does work x) gives off heat y) loses mass z) absorbs heat 

Last Answer : ANSWER: Z -- ABSORBS HEAT

Ammonia leakage in the refrigeration system is detected by (A) Sulphur stick, which on detection gives white smoke (B) Using chemical reagents (C) Its smell (D) Soap solution

Description : Ammonia leakage in the refrigeration system is detected by (A) Sulphur stick, which on detection gives white smoke (B) Using chemical reagents (C) Its smell (D) Soap solution

Last Answer : Option A

Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric liquid should have high surface tension (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Description : Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric ... point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Last Answer : (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Surface tension (A) Acts in the plane of the interface normal to any line in the surface (B) Is also known as capillarity (C) Is a function of the curvature of the interface (D) Decreases with fall in temperature

Description : Surface tension (A) Acts in the plane of the interface normal to any line in the surface (B) Is also known as capillarity (C) Is a function of the curvature of the interface (D) Decreases with fall in temperature

Last Answer : Answer: Option A

The need for insulation cleaning may be determined by _____. A. visual inspection for dirt accumulation B. high megger readings C. low operating temperature D. the time period since the last cleaning

Description : The need for insulation cleaning may be determined by _____. A. visual inspection for dirt accumulation B. high megger readings C. low operating temperature D. the time period since the last cleaning

Last Answer : Answer: A

Why does V2O5 acts as catalyst ?

Description : Why does V2O5 acts as catalyst ?

Last Answer : Ans : It is because V shows variable O.S . 

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these

Description : A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these

Last Answer : (C) Ozone

A catalyst is said to be a negative catalyst, if it (A) Retards the rate of reaction (B) Reduces the value of equilibrium constant (C) Does not initiate the reaction (D) All (A), (B) and (C)

Description : A catalyst is said to be a negative catalyst, if it (A) Retards the rate of reaction (B) Reduces the value of equilibrium constant (C) Does not initiate the reaction (D) All (A), (B) and (C)

Last Answer : (A) Retards the rate of reaction

During washing of clothes, we use indigo due to its – (1) Better cleaning action (2) Proper pigmental composition (3) High glorious nature (4) Very low cost

Description : During washing of clothes, we use indigo due to its – (1) Better cleaning action (2) Proper pigmental composition (3) High glorious nature (4) Very low cost

Last Answer : (2) Proper pigmental composition Explanation: Indigo is a dye different than any other. It does not require any mordant. Rather it is dyed through a living fermentation process. The process "reduces" the ... a blight green. Slowly the ail-changes it to the beautiful deep and rich blue of Indigo.

During washing of clothes, we use indigo due to its (1) better cleaning action (2) proper pigmental composition (3) high glorious nature (4) very low cost

Description : During washing of clothes, we use indigo due to its (1) better cleaning action (2) proper pigmental composition (3) high glorious nature (4) very low cost

Last Answer : proper pigmental composition

Which of the following advantage does not possess by the rapid prototyping process over thetraditional prototyping process? a.It consumes less time b.Gives better quality c.Reduces product launch time d.It's cheaper

Description : Which of the following advantage does not possess by the rapid prototyping process over thetraditional prototyping process? a.It consumes less time b.Gives better quality c.Reduces product launch time d.It's cheaper

Last Answer : d.It's cheaper

The presence of ozone due to corona is harmful because it (a) reduces power factor (b) corrodes the material (c) gives odour (d) transfer energy to the ground (e) none of the above

Description : The presence of ozone due to corona is harmful because it (a) reduces power factor (b) corrodes the material (c) gives odour (d) transfer energy to the ground (e) none of the above

Last Answer : (b) corrodes the material

What hypoallergenic laundry soap reduces skin irritation?

Description : What hypoallergenic laundry soap reduces skin irritation?

Last Answer : I do not use any fragrances on anything in my home. By fragrances, I mean any fragrance with petrochemicals in it. If it says fragrance , that most likely involves petrochemicals. It's pretty easy ... they use chemicals that act as anesthetic for your nose. There's nothing healthy for you in it.

Water is always involved with landslides. This is because it: (A) reduces the shear strength of rocks (B) increases the weight of the overburden (C) enhances chemical weathering (D) is a universal solvent

Description : Water is always involved with landslides. This is because it: (A) reduces the shear strength of rocks (B) increases the weight of the overburden (C) enhances chemical weathering (D) is a universal solvent

Last Answer : Answer: B  A landslide is a geological phenomenon that includes a wide range of ground movements. Rockfalls, deep failure of slopes and shallow debris flows were common. Landslides can occur in ... , which destabilize the already fragile slopes. 7) vibrations from machinery or traffic. 8) blasting

Partial hydrogenation of vegetable oils in the presence of Ni catalyst at 200°C gives (a) Vanaspati ghee (b) Margarine (c) Both of these (d) None of these

Description : Partial hydrogenation of vegetable oils in the presence of Ni catalyst at 200°C gives (a) Vanaspati ghee (b) Margarine (c) Both of these (d) None of these

Last Answer : Vanaspati ghee

Detergents used for cleaning clothes and utensils contain (1) nitrates (2) bicarbonates (3) sulphonates (4) bismuthates

Description : Detergents used for cleaning clothes and utensils contain (1) nitrates (2) bicarbonates (3) sulphonates (4) bismuthates

Last Answer : sulphonates

Leakage in a cooking gas cylinder is detected by (A) Radio-isotopes (B) Pouring soap solution on the surface and locating the gas bubbles (C) Halide torch (D) Pungent smell of mercaptans present in the gas

Description : Leakage in a cooking gas cylinder is detected by (A) Radio-isotopes (B) Pouring soap solution on the surface and locating the gas bubbles (C) Halide torch (D) Pungent smell of mercaptans present in the gas

Last Answer : Option D

(4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that make it freeflowing (anticaking agents) such as sodium aluminosilicate or magnesium carbonate. Because of Hygroscopic nature of salt it become wet in rainy season as the salt absorbs moisture from environment.

Description : (4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that ... of salt it become wet in rainy season as the salt absorbs moisture from environment.

Last Answer : Which of the following could be used as fuel in propellant or rockets? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the (A) Work hardening (B) Bauschinger effect (C) Creeping effect (D) Stress recovery effect

Description : The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the (A) Work hardening (B) Bauschinger effect (C) Creeping effect (D) Stress recovery effect

Last Answer : (B) Bauschinger effect

Pilocarpine reduces intraocular tension in open angle glaucoma by: A. Contracting sphincter pupillae B. Increasing tone of ciliary muscle C. Reducing aqueous formation D. Enhancing uveo-scleral outflow

Description : Pilocarpine reduces intraocular tension in open angle glaucoma by: A. Contracting sphincter pupillae B. Increasing tone of ciliary muscle C. Reducing aqueous formation D. Enhancing uveo-scleral outflow

Last Answer : B. Increasing tone of ciliary muscle

Pilocarpine reduces intraocular tension in open angle glaucoma by: A. Contracting sphincter pupillae B. Increasing tone of ciliary muscle C. Reducing aqueous formation D. Enhancing uveo-scleral outflow

Description : Pilocarpine reduces intraocular tension in open angle glaucoma by: A. Contracting sphincter pupillae B. Increasing tone of ciliary muscle C. Reducing aqueous formation D. Enhancing uveo-scleral outflow

Last Answer : B. Increasing tone of ciliary muscle

Conflict is dysfunctional when it: (a) provides a medium to release tension. ; (b) reduces group cohesiveness. (c) fosters an environment of self-evaluation and change. (d) provides a means for releasing tensions.

Description : Conflict is dysfunctional when it: (a) provides a medium to release tension. ; (b) reduces group cohesiveness. (c) fosters an environment of self-evaluation and change. (d) provides a means for releasing tensions. 

Last Answer : (b) reduces group cohesiveness.

Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Description : Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Last Answer : (4) Of the capillary action phenomenon Explanation: It is because of the capillary action phenomenon because of which oil rise up the wick in a lamp. Capillary action, or capillarity, is the ability ... such as paper, in some nonporous materials such as liquefied carbon fiber, or in a cell.

Soldering of two metals is possible because of the property of – (1) Viscosity (2) Osmosis (3) Cohesion (4) Surface tension

Description : Soldering of two metals is possible because of the property of – (1) Viscosity (2) Osmosis (3) Cohesion (4) Surface tension

Last Answer : (3) Cohesion Explanation: Soldering is the process of joining two metals by the use of a solder alloy, and it is one of the oldest known joining techniques. It is possible because of the ... through-out the interior of substance. Soldering leads to alloy formation at the layer between two metals.

Soldering of two metals is possible because of the property of : (1) Viscosity (2) Osmosis (3) Cohesion (4) Surface tension

Description : Soldering of two metals is possible because of the property of : (1) Viscosity (2) Osmosis (3) Cohesion (4) Surface tension

Last Answer : Cohesion

The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric temperature (3) the pumping process causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric ... causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Last Answer : (2) the temperature inside the Earth is higher than the atmospheric temperature

Which among the following is a non-durable good ? 1. soap 2. maturity 3. color T.V4. clothes 5. none of these

Description : Which among the following is a non-durable good ? 1. soap 2. maturity 3. color T.V 4. clothes 5. none of these

Last Answer : soap

A catalyst is a substance which (a) stops a chemical reaction (b) helps initiate a reaction (c) increases the speed of a reaction (d) decreases the speed of a reaction

Description : A catalyst is a substance which (a) stops a chemical reaction (b) helps initiate a reaction (c) increases the speed of a reaction (d) decreases the speed of a reaction

Last Answer : Ans:(c)

Sunlight (A) Helps growth of bacterias (B) Impedes growth of algae (C) Increases dissolved oxygen content (D) Reduces turb

Description : Sunlight  (A) Helps growth of bacterias  (B) Impedes growth of algae  (C) Increases dissolved oxygen content  (D) Reduces turb

Last Answer : (B) Impedes growth of algae

The coating in a fiber helps protect fiber from moisture, which reduces the possibility of the occurrence of a detrimental phenomenon called ∙ A. static fatigue ∙ B. mechanical fatigue ∙ C. stress fatigue ∙ D. coating fatigue

Description : The coating in a fiber helps protect fiber from moisture, which reduces the possibility of the occurrence of a detrimental phenomenon called ∙ A. static fatigue ∙ B. mechanical fatigue ∙ C. stress fatigue ∙ D. coating fatigue

Last Answer : ∙ A. static fatigue

The following is true about actions of ethylalcohol: A. It exerts anticonvulsant action followed by lowering of seizure threshold B. It lowers pain threshold C. It increases confidence and reduces number of errors D. It increases heat production and helps to keep warm in cold weather

Description : The following is true about actions of ethylalcohol: A. It exerts anticonvulsant action followed by lowering of seizure threshold B. It lowers pain threshold C. It increases confidence and reduces number of errors D. It increases heat production and helps to keep warm in cold weather

Last Answer : A. It exerts anticonvulsant action followed by lowering of seizure threshold

What is it about the shower that acts as such a strong catalyst for good ideas?

Description : What is it about the shower that acts as such a strong catalyst for good ideas?

Last Answer : I guess that the hot steam clears your head.