Which of the following is not a property of heavy water? (1) Boiling point of heavy water is lower than that or ordinary water (2) Density of heavy water is higher than that of ordinary water (3) Freezing point of heavy water is higher than that of ordinary water (4) It produces corrosion

Which of the following is not a property of heavy water? (1) Boiling point of heavy water is lower than that or ordinary water (2) Density of heavy water is higher than that of ordinary water (3) Freezing point of heavy water is higher than that of ordinary water (4) It produces corrosion
by

1 Answer

Answer :

(1) Boiling point of heavy water is lower than that or ordinary water Explanation: Heavy water, formally called deuterium oxide or 2H90 or D20, is a form of water that contains the hydrogen isotope deuterium, rather than the common protium isotope. The colloquial term heavy water is often also used to refer a highly enriched water mixture that contains mostly deuterium oxide but also contains some ordinary water molecules as well: for instance heavy water used in CANDLE reactors is 99.75% enriched by hydrogen atom-fraction.
by
selected

Related questions

Which of the following is not a property of heavy water ? (1) Boiling point of heavy water is lower than that or ordinary water (2) Density of heavy water is higher than that of ordinary water (3) Freezing point of heavy water is higher than that of ordinary water (4) It produces corrosion

Description : Which of the following is not a property of heavy water ? (1) Boiling point of heavy water is lower than that or ordinary water (2) Density of heavy water is higher than that of ordinary water (3) Freezing point of heavy water is higher than that of ordinary water (4) It produces corrosion

Last Answer : Boiling point of heavy water is lower than that or ordinary water

Safety aside, for which of the following reasons is alcohol used in preference to mercury in a minimum thermometer? w) Alcohol has a higher boiling point x) Alcohol has a lower freezing point y) Alcohol contracts more uniformly z) Alcohol can be dyed for visibility

Description : Safety aside, for which of the following reasons is alcohol used in preference to mercury in a minimum thermometer? w) Alcohol has a higher boiling point x) Alcohol has a lower freezing point y) Alcohol contracts more uniformly z) Alcohol can be dyed for visibility

Last Answer : ANSWER: X -- ALCOHOL HAS A LOWER FREEZING POINT

Compared to fresh Water, the freezing point of sea water is - (1) Higher (2) Lower (3) Same (4) Depends on the sea from which the water is sourced

Description : Compared to fresh Water, the freezing point of sea water is - (1) Higher (2) Lower (3) Same (4) Depends on the sea from which the water is sourced

Last Answer : (2) Lower Explanation: Ocean water freezes just like freshwater, but at lower temperatures.

Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons

Description : Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons

Last Answer : ANSWER: X -- HIGHER DENSITY

In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin

Description : In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin

Last Answer : Lower the freezing point

Alcohol is more volatile than water because ______ is lower than water. (1) its boiling point (2) its density (3) its viscosity (4) its surface tension

Description : Alcohol is more volatile than water because ______ is lower than water. (1) its boiling point (2) its density (3) its viscosity (4) its surface tension

Last Answer : (1) its boiling point Explanation: Drinking alcohol (ethanol) and a lot of other simple alcohols are more volatile than water because they are less polar. Thus, alcohol has higher vapor pres-sure and ... C is what makes it possible to distill alcohol into a much stronger solution than wine or beer.

Alcohol is more volatile than water because _________ is lower than water. (1) its boiling point (2) its density (3) its viscosity (4) its surface tension

Description : Alcohol is more volatile than water because _________ is lower than water. (1) its boiling point (2) its density (3) its viscosity (4) its surface tension

Last Answer : its boiling point

The freezing point of the electrolyte in a fully charged lead-acid battery will be _____________. A. higher than in a discharged battery B. lower than in a discharged battery C. the same as in a discharged battery D. higher than in a discharged battery, but the specific gravity will be less

Description : The freezing point of the electrolyte in a fully charged lead-acid battery will be _____________. A. higher than in a discharged battery B. lower than in a discharged battery C. the same as in a discharged battery D. higher than in a discharged battery, but the specific gravity will be less

Last Answer : Answer: B

When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information

Description : When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information

Last Answer : ANSWER: X -- LOWER THAN PURE SOLVENT

A metallic alloy in general as compared to their pure metal components is (A) More corrosion resistant (B) Having higher melting point (C) Having lower hardness, reactivity and fusibility (D) Having lower electrical conductivity

Description : A metallic alloy in general as compared to their pure metal components is (A) More corrosion resistant (B) Having higher melting point (C) Having lower hardness, reactivity and fusibility (D) Having lower electrical conductivity

Last Answer : (A) More corrosion resistant

Explain the following (a) The density of ice is less than that of liquid water? (b) The boiling point of water is less than that of H2S. (c) NaH has higher reducing character than H2O.

Description : Explain the following (a) The density of ice is less than that of liquid water? (b) The boiling point of water is less than that of H2S. (c) NaH has higher reducing character than H2O.

Last Answer : Ans-a) In structure of ice , Oxygen atom is tetrahedrally surrouneded by four hydrogen (with two hydrogen by hydrogen bond and with two hydrogen by covalent bond ) and have vacant spaces in ... Due to extensive hydrogen bonding in water c)NaH is ionic compound while water is a covalent compound

Heavy water is preferred over ordinary water as a coolant, because it. (A) Acts both as an efficient coolant as well as a moderator (B) Can be heated to a higher temperature without pressurizing (C) Is less prone to radiation damage (D) All (A), (B) and (C)

Description : Heavy water is preferred over ordinary water as a coolant, because it. (A) Acts both as an efficient coolant as well as a moderator (B) Can be heated to a higher temperature without pressurizing (C) Is less prone to radiation damage (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which one of the following is the most characteristic property of an element? (a) Density (b) Boiling point (c) Mass number (d) Atomic number

Description : Which one of the following is the most characteristic property of an element? (a) Density (b) Boiling point (c) Mass number (d) Atomic number

Last Answer : Ans:(d)

Why is ethanol boiling at a higher boiling point than methyl ether boils at a lower boiling point despite the fact that they have the same molecular weight?

Description : Why is ethanol boiling at a higher boiling point than methyl ether boils at a lower boiling point despite the fact that they have the same molecular weight?

Last Answer : Need answer

. A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of all the effects is -less than that in a single effect evaporator system (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect (C) Boiling point elevation in a single effect system is much higher than that in any effect in a multi-effect system (D) Heat transfer co-efficient in a single effect is much lower than that in any effect in a multi-effect system

Description : . A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of ... in a single effect is much lower than that in any effect in a multi-effect system

Last Answer : (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

Relative to the pure solvent, the boiling point of a solution is: w) higher x) lower y) at the same temperature

Description : Relative to the pure solvent, the boiling point of a solution is: w) higher x) lower y) at the same temperature

Last Answer : ANSWER: W -- HIGHER

Which of the following properties is greater for a solution than for the pure solvent? w) freezing point x) vapor pressure y) temperature z) boiling point

Description : Which of the following properties is greater for a solution than for the pure solvent? w) freezing point x) vapor pressure y) temperature z) boiling point

Last Answer : ANSWER: D -- BOILING POINT

The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape

Description : The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape

Last Answer : ANSWER: X -- LOWER IN FRESH WATER THAN IN SEAWATER

The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) boiling point (b) melting point (c) triple point (d) freezing point

Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) boiling point (b) melting point (c) triple point (d) freezing point

Last Answer : Ans:(c)

Tetraethyl lead (TEL) is added to petrol to (a) prevent its freezing (b) increase its boiling point (c) increase its flash point (d) increase its anti-knocking rating

Description : Tetraethyl lead (TEL) is added to petrol to (a) prevent its freezing (b) increase its boiling point (c) increase its flash point (d) increase its anti-knocking rating

Last Answer : Ans:(d)

The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) Boiling point (b) Melting point (c) Triple point (d) Freezing point

Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) Boiling point (b) Melting point (c) Triple point (d) Freezing point

Last Answer : Ans:(c)

On addition of solute in the solvent, the __________ of the solution decreases. (A) Boiling point (B) Freezing point (C) Vapour pressure (D) Both (B) and (C)

Description : On addition of solute in the solvent, the __________ of the solution decreases. (A) Boiling point (B) Freezing point (C) Vapour pressure (D) Both (B) and (C)

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

The temperature at which both liquid and gas phases are identical, is called the __________ point. (A) Critical (B) Triple (C) Freezing (D) Boiling

Description : The temperature at which both liquid and gas phases are identical, is called the __________ point. (A) Critical (B) Triple (C) Freezing (D) Boiling

Last Answer : (A) Critical

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point. (A) Freezing (B) Triple (C) Boiling (D) Boyle

Description : The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point. (A) Freezing (B) Triple (C) Boiling (D) Boyle

Last Answer : B) Triple

The boiling point of water depends upon the – (1) atmospheric pressure (2) volume (3) density (4) mass

Description : The boiling point of water depends upon the – (1) atmospheric pressure (2) volume (3) density (4) mass

Last Answer : (1) atmospheric pressure Explanation: The boiling point corresponds of water to the ternperature at which its vapour pressure equals the surrounding environmental pressure. So it is dependent on ... pressure decreases. As this pressure decreases, the boiling point of the water also decreases.

Water is used in car radiator because of its – (1) low density (2) easy availability (3) high specific heat capacity (4) low boiling point

Description : Water is used in car radiator because of its – (1) low density (2) easy availability (3) high specific heat capacity (4) low boiling point

Last Answer : (3) high specific heat capacity Explanation: Water is used in car radiators because the Specific heat capacity of water is high as a result of which it takes away the heat from engine better compared to ... coolant used in the radiator. If the radiator was to overheat the car would come to a stop.

The boiling point of water depends upon the (1) atmospheric pressure (2) volume (3) density (4) mass

Description : The boiling point of water depends upon the (1) atmospheric pressure (2) volume (3) density (4) mass

Last Answer : atmospheric pressure

Water is used in car radiator because of its (1) low density (2) easy availability (3) high specific heat capacity (4) low boiling point

Description : Water is used in car radiator because of its (1) low density (2) easy availability (3) high specific heat capacity (4) low boiling point

Last Answer : high specific heat capacity

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because – (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because - (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : (3) metals are good conductors of heat Explanation: On a chilly day, the room temperature is lower than our body temperature. Since metals have a higher coefficient of thermal conductivity than plastic, they ... from our fingers will flow to the metal cap much more quickly than to the plastic body.

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : metals are good conductors of heat

The boiling point of water decreases at higher altitudes is due to – (1) low temperature (2) low atmospheric pressure (3) high temperature (4) high atmospheric pressure

Description : The boiling point of water decreases at higher altitudes is due to – (1) low temperature (2) low atmospheric pressure (3) high temperature (4) high atmospheric pressure

Last Answer : (2) low atmospheric pressure Explanation: At higher altitudes, the air pressure is decreased, which forces water's boiling point to lower. The air pressure decreases with altitude because of the ... of air. The lowered boiling point of water requires an increase in cooking times or temperature.

The boiling point of water decreases at higher altitudes is due to (1) low temperature (2) low atmospheric pressure (3) high temprature (4) high atmospheric pressure

Description : The boiling point of water decreases at higher altitudes is due to (1) low temperature (2) low atmospheric pressure (3) high temprature (4) high atmospheric pressure

Last Answer : low atmospheric pressure

The pH value of Puzzolanic concrete is ________________ that of ordinary concrete [ A ] lower than [ B ] much lower than [ C ] higher than [ D ] equal

Description : The pH value of Puzzolanic concrete is ________________ that of ordinary concrete [ A ] lower than [ B ] much lower than [ C ] higher than [ D ] equal

Last Answer : [ B ] much lower than

The pH value of Puzzolanic concrete is ________________ that of ordinary concrete [ A ] lower than [ B ] much lower than [ C ] higher than [ D ] equal

Description : The pH value of Puzzolanic concrete is ________________ that of ordinary concrete [ A ] lower than [ B ] much lower than [ C ] higher than [ D ] equal

Last Answer : [ B ] much lower than

'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Description : 'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Last Answer : (3) has higher elasticity Explanation: A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Steel is an alloy made by combining iron and other elements, the most common of these being carbon.

'Shock-absorbers' are usually made of steel as it : (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Description : 'Shock-absorbers' are usually made of steel as it : (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property

Last Answer : has higher elasticity

Moisture in freon refrigeration system causes (a) ineffective refrigeration (b) high power consumption (c) freezing automatic regulating valve (d) corrosion of whole system

Description : Moisture in freon refrigeration system causes (a) ineffective refrigeration (b) high power consumption (c) freezing automatic regulating valve (d) corrosion of whole system

Last Answer : Ans: c

Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Last Answer : (3) higher temperature is attained for cooking Explanation: In pressure cooker boiling point of water increases due to high pressure.

Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Last Answer : higher temperature is attained for cooking 

As compared to ordinary Portland cement, high alumina cement has (A) Higher initial setting time but lower final setting time (B) Lower initial setting time but higher final setting time (C) Higher initial and final setting times (D) Lower initial and final setting times

Description : As compared to ordinary Portland cement, high alumina cement has (A) Higher initial setting time but lower final setting time (B) Lower initial setting time but higher final setting time (C) Higher initial and final setting times (D) Lower initial and final setting times

Last Answer : Answer: Option A

Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Description : Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Last Answer : (3) Steam Explanation: A burn is an injury to the body's tissue resulting from heat, chemicals, electricity or sunlight. Burns are often classified as first degree (those causing damage to the ... deepest and most severe damage destruction of all layers of the skin and damage to tissues underneath.

Which of the following produces more severe burns ? (1) Boiling water (2) Hot water (3) Steam (4) Melting iceberg

Description : Which of the following produces more severe burns ? (1) Boiling water (2) Hot water (3) Steam (4) Melting iceberg

Last Answer : Steam

Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process (C) The most ideal feedstock for thermal reforming is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Description : Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming ... is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Last Answer : (C) The most ideal feedstock for thermal reforming is dearomatised kerosene

Primary alcohols have boiling points that are _____________ the corresponding aldehydes. (a) Lower than (b) Higher than (c) About the same

Description : Primary alcohols have boiling points that are _____________ the corresponding aldehydes. (a) Lower than (b) Higher than (c) About the same

Last Answer : Higher than

Which statements about alkenes and alkanes of corresponding chain lengths is true? (I) Alkenes have slightly lower melting points than alkanes (II) Alkenes have slightly higher melting points than alkanes (III) Alkenes have higher boiling points than alkanes (IV) Alkenes have lower boiling points than alkanes (a) I and III (b) II and IV (c) I and IV (d) II and III

Description : Which statements about alkenes and alkanes of corresponding chain lengths is true? (I) Alkenes have slightly lower melting points than alkanes (II) Alkenes have slightly higher melting points than alkanes (III) Alkenes have higher boiling ... (a) I and III (b) II and IV (c) I and IV (d) II and III

Last Answer : I and III

The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________ a) Foaming b) Priming c) Corrosion d) Caustic embrittlement

Description : The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________ a) Foaming b) Priming c) Corrosion d) Caustic embrittlement

Last Answer : b) Priming

Branched chair polymers as compared to linear polymers have (A) Higher melting point (B) Higher tensile strength (C) Lower density (D) None of these

Description : Branched chair polymers as compared to linear polymers have (A) Higher melting point (B) Higher tensile strength (C) Lower density (D) None of these

Last Answer : (C) Lower density

Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation (B) Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities (C) Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise(D) Large scale cavitation cannot damage pipeline, restrict fluid flow anddamage steam turbine blades

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Water tube boilers produces steam at a________ pressure than that of fire tube boilers. a) Higher b) Lower c) Same d) None of the above

Description : Water tube boilers produces steam at a________ pressure than that of fire tube boilers. a) Higher b) Lower c) Same d) None of the above

Last Answer : a) Higher

Which of the following is the most important property for a jet fuel? (A) Cloud point (B) Pour point (C) Colour (D) Freezing point

Description : Which of the following is the most important property for a jet fuel? (A) Cloud point (B) Pour point (C) Colour (D) Freezing point

Last Answer : (D) Freezing point