A little ether on the palm gives a cooling sensation because ether (a) is a cold liquid (b) evaporates (c) enters the pores of the skin (d) condenses on the palm

A little ether on the palm gives a cooling sensation because ether (a) is a cold liquid (b) evaporates (c) enters the pores of the skin (d) condenses on the palm
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After long periods of use, a gray spot develops on the inside of a bulb. This is because of: A. The tungsten filament evaporates and collects there B. The heat of the bulb scorches the glass at the top C. Dust inside the bulb condenses on the top D. Glass undergoes a change due to the heat

Description : After long periods of use, a gray spot develops on the inside of a bulb. This is because of: A. The tungsten filament evaporates and collects there B. The heat of the bulb scorches the glass at the top C. Dust inside the bulb condenses on the top D. Glass undergoes a change due to the heat

Last Answer : ANSWER: A

After long periods of use, a grey spot develops on the inside of a bulb. This is because – (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Description : After long periods of use, a grey spot develops on the inside of a bulb. This is because – (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Last Answer : (3) dust inside the bulb condenses on the top Explanation: At high operating temperatures, tungsten evaporates from the filament and gradually forms a gray film on the inside of the bulb. The inert ... spot develops in the filament. When this happens, the filament will break and the bulb fails.

After long periods of use, a grey spot develops on the inside of a bulb. This is because (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Description : After long periods of use, a grey spot develops on the inside of a bulb. This is because (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Last Answer : dust inside the bulb condenses on the top

The surface of water in a pond remains cool even on a hot day because 1. water evaporates at the surface and evaporation causes cooling 2. the heat absorbed at the surface is transmitted downwards 3. Water in contact with the bottom of the pond becomes cool and rises to the surface due to convection Which of the above statements is/are correct? (a) 1 only (b) 3 only (c) 1 and 3 (d) 1, 2 and 3

Description : The surface of water in a pond remains cool even on a hot day because 1. water evaporates at the surface and evaporation causes cooling 2. the heat absorbed at the surface is transmitted downwards 3. Water in contact with the bottom ... /are correct? (a) 1 only (b) 3 only (c) 1 and 3 (d) 1, 2 and 3

Last Answer : Ans:(a)

Spirit in contact with body gives cool sensation because it is – (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Description : Spirit in contact with body gives cool sensation because it is – (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Last Answer : (3) highly volatile Explanation: Spirit is very volatile. So when it is exposed, it evaporates rapidly to the air if released into the environment, producing a cool effect.

Spirit in contact with body gives cool sensation because it is : (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Description : Spirit in contact with body gives cool sensation because it is : (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Last Answer : highly volatile

Pores on the body of sponges through which the water enters.

Description : Pores on the body of sponges through which the water enters.

Last Answer : Name the following: Pores on the body of sponges through which the water enters.

Is the liquid propane in a barbecue evaporates away because the user left the valve open a chemical or physical change?

Description : Is the liquid propane in a barbecue evaporates away because the user left the valve open a chemical or physical change?

Last Answer : It's a physical change. Chemically, it's still propane - butit's physically changed from a liquid to a gas.

One of the purposes of sub-cooling the liquid refrigerant is to (a) reduce compressor overheating (b) reduce compressor discharge temperature (c) increase cooling effect (d) ensure that only liquid and not the vapour enters the expansion (throttling) valve

Description : One of the purposes of sub-cooling the liquid refrigerant is to (a) reduce compressor overheating (b) reduce compressor discharge temperature (c) increase cooling effect (d) ensure that only liquid and not the vapour enters the expansion (throttling) valve

Last Answer : Ans: d

The _______ system includes anywhere that the steam condenses to form liquid water. a. Loop b. Power c. Liquid d. Condensate

Description : The _______ system includes anywhere that the steam condenses to form liquid water. a. Loop b. Power c. Liquid d. Condensate

Last Answer : d. Condensate

Melting temperature of DNA is the temperature at which (A) Solid DNA becomes liquid (B) Liquid DNA evaporates (C) DNA changes from double helix into supercoiled DNA (D) Native double helical DNA is denatured

Description : Melting temperature of DNA is the temperature at which (A) Solid DNA becomes liquid (B) Liquid DNA evaporates (C) DNA changes from double helix into supercoiled DNA (D) Native double helical DNA is denatured

Last Answer : Answer : D

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : (2) The liquid boils Explanation: Ordinary evaporation is a surface phenomenon -since the vapor pressure is low and since the pressure inside the liquid is equal to atmospheric pressure plus ... pressure is equal to atmospheric pressure, bubbles form, and the vaporization becomes a volume phenomena.

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : The liquid boils

Ammonium chloride when dissolved in water leads to a cooling sensation. The dissolution of ammonium chloride at constant temperature is accompanied by

Description : Ammonium chloride when dissolved in water leads to a cooling sensation. The dissolution of ammonium chloride at constant temperature is accompanied by

Last Answer : Ammonium chloride when dissolved in water leads to a cooling sensation. The dissolution of ammonium ... change in entropy D. No charge in enthalpy

When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive momentarily (c) iris is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Description : When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive ... is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Last Answer : Ans:(c)

When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye lens (b) The retina retains the bright images for some time and becomes momentarily insensitive (c) The iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Description : When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye ... iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Last Answer : Ans:(d)

When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Last Answer : C. Iris is unable to dilate the pupil immediately (Answer)

When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

Last Answer : ANSWER: C

When a person walking in bright Sunlight enters a dark room, he is not able to see clearly for a little while because (1) the eye muscles cannot immediately adjust the focal length of the eye lens. (2) the retina retains the bright images for sometime and becomes momentarily insensitive. (3) the iris is unable to contract the pupil immediately. (4) the iris is unable to dilate the pupil immediately.

Description : When a person walking in bright Sunlight enters a dark room, he is not able to see clearly for a little while because (1) the eye muscles cannot immediately adjust the focal length of the eye ... is unable to contract the pupil immediately. (4) the iris is unable to dilate the pupil immediately.

Last Answer : the iris is unable to dilate the pupil immediately.

Does medication you take seep through your pores and leave traces on your skin like salt, garlic etc does?

Description : Does medication you take seep through your pores and leave traces on your skin like salt, garlic etc does?

Last Answer : I would think that if any did, it would be such a tiny amount, it couldn’t hurt your cat. I take Tramadol and morphine too, and my cat licks my fingers. She appears as healthy as can be.

Does cleansing your skin with cream block pores?

Description : Does cleansing your skin with cream block pores?

Last Answer : I think it depends on the type of skin you have. If you have greasy or combination skin I think it could do but for a dry skin I don't believe it would do too much harm. Just using any cream ... skin type. There are plenty to suit all skin types these days, just choose one that is right for you.

The importance of perspiration is to – (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature

Description : The importance of perspiration is to – (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature

Last Answer : (4) Regulate body temperature Explanation: The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature ... temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.

The importance of perspiration is to (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature

Description : The importance of perspiration is to (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature 

Last Answer : Regulate body temperature

Plants are killed in winter by frost because (a) No photosynthesis occurs at low temperature (b) Of desiccation (c) Water in the plants freezes (d) Water in the plants evaporates

Description : Plants are killed in winter by frost because (a) No photosynthesis occurs at low temperature (b) Of desiccation (c) Water in the plants freezes (d) Water in the plants evaporates

Last Answer : Ans:(b)

During hot weather, the fan produces a feeling of comfort. This is because – (1) fan supplies cool air (2) fan cools the air (3) our perspiration evaporates rapidly (4) conductivity of air increases

Description : During hot weather, the fan produces a feeling of comfort. This is because – (1) fan supplies cool air (2) fan cools the air (3) our perspiration evaporates rapidly (4) conductivity of air increases

Last Answer : (3) our perspiration evaporates rapidly Explanation: Fans make the air more comfortable for two reasons: (1) by moving the air, they blow away body heat and evaporate sweat, cooling the body, and (2) they also mix the cooler air near the floor with the warmer air by people's faces.

When hot-water is sprinkled on a hotter glass tumbler, it breaks because – (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because – (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : (2) glass suddenly contracts Explanation: If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.

When hot-water is sprinkled on a hotter glass tumbler, it breaks because (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : glass suddenly contracts

The following are true about corneal sensation: a. the sensation is greatest at the apex and diminishes towards the limbus. b. the temporal half of the cornea is more sensitive than the nasal half c. the Bonnet-Cochet aesthesiometer gives quantitative measure of the degree of hypoaesthesia d. all above

Description : The following are true about corneal sensation: a. the sensation is greatest at the apex and diminishes towards the limbus. b. the temporal half of the cornea is more sensitive than the ... c. the Bonnet-Cochet aesthesiometer gives quantitative measure of the degree of hypoaesthesia d. all above

Last Answer : all above

The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

Description : The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) ... contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

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

Give reason: After the expansion stroke of a steam engine, steam condenses into water.

Description : Give reason: After the expansion stroke of a steam engine, steam condenses into water.

Last Answer : As steam expands, it loses its kinetic energy and gets condensed into water.

what is the moisture that condenses out of air and falls to the ground as rain snow sleet or hail we are experiencing

Description : what is the moisture that condenses out of air and falls to the ground as rain snow sleet or hail we are experiencing

Last Answer : Need Answer

Water that floats in the sky condenses to form these?

Description : Water that floats in the sky condenses to form these?

Last Answer : River

Acetoacetyl-CoA condenses with one more molecule of acetyl-CoA to form (A) Mevalonate (B) Acetoacetate (C) β-Hydroxybutyrate (D) 3-Hydroxy 3-methyl-glutaryl-CoA

Description : Acetoacetyl-CoA condenses with one more molecule of acetyl-CoA to form (A) Mevalonate (B) Acetoacetate (C) β-Hydroxybutyrate (D) 3-Hydroxy 3-methyl-glutaryl-CoA

Last Answer : Answer : D

Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes (A) Poor visibility due to sky darkening (B) Irritation in eyes (C) Respiratory trouble (D) All (A), (B) and (C)

Description : Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby ... B) Irritation in eyes (C) Respiratory trouble (D) All (A), (B) and (C)

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

Burning sensation while urinating, fever in body and rash on skin. What medicine should I take for this and how long should I take this medicine ?

Description : Burning sensation while urinating, fever in body and rash on skin. What medicine should I take for this and how long should I take this medicine ?

Last Answer : You can use Hamdard Safi Syrup. As well as tablet neofloxacin 500 mg 1 + 0 + 1 after meals. 7 days. Tablet sitin. 10 days. 0 + 0 + 1 after meals.

Which of following statement is incorrect according to BBCR Repertory Options: 1) Radiating pain is given under Sensation & Complaints in General 2) Typhoid fever is given under Fever - Pathological types 3) Pregnancy is given under Sexual Impulse 4) Tetters is given in Skin & Exterior body

Description : Which of following statement is incorrect according to BBCR Repertory Options: 1) Radiating pain is given under Sensation & Complaints in General 2) Typhoid fever is given under Fever - Pathological types 3) Pregnancy is given under Sexual Impulse 4) Tetters is given in Skin & Exterior body

Last Answer : Correct Answer: 3) Pregnancy is given under Sexual Impulse

My cheeks get this weird cold sensation whenever I eat cheese. Does anybody else experience this and/or know why this happens?

Description : My cheeks get this weird cold sensation whenever I eat cheese. Does anybody else experience this and/or know why this happens?

Last Answer : answer:is it every kind of cheese? and is it the inside or the outside of your cheeks?

Patient has hot and cold sensation and pain on percussion after the filling of class III Cavity with GIC base and composite. What will be possible cause – 1) bacterial microleakage 2) mechanical trauma of cavity cutting 3) Exothermic reaction while setting GIC

Description : Patient has hot and cold sensation and pain on percussion after the filling of class III Cavity with GIC base and composite. What will be possible cause – 1) bacterial microleakage 2) mechanical trauma of cavity cutting 3) Exothermic reaction while setting GIC

Last Answer : 2) mechanical trauma of cavity cutting

Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R): The reaction involves cleavage of C-O bo

Description : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R): The reaction involves cleavage of C-O bo

Last Answer : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R ... R is false D. A is false but R is true

A mixture of ether and ….. Gives temperature as low as 163 K (1) NaC1 (2) Ice (3) Solid `CO_(2)` `C_(2)H_(5)OH`

Description : A mixture of ether and ….. Gives temperature as low as 163 K (1) NaC1 (2) Ice (3) Solid `CO_(2)` `C_(2)H_(5)OH`

Last Answer : A mixture of ether and .. Gives temperature as low as 163 K (1) NaC1 (2) Ice (3) Solid `CO_(2)` ... true but R is false D. A is false but R is true

One mole of diethyl ether on heating with conc. HI gives

Description : One mole of diethyl ether on heating with conc. HI gives

Last Answer : One mole of diethyl ether on heating with conc. HI gives A. 1 mole of `C_(2)H_(5)I` and 1 ... Iodoethane and ethonol but not in a `1:1` mole ratio

Ethyl acetate on heating with sodium ethoxide gives (a) Ethyl acetoacetate (b) Sodium acetate (c) Ethyl alcohol (d) Diethyl ether

Description : Ethyl acetate on heating with sodium ethoxide gives (a) Ethyl acetoacetate (b) Sodium acetate (c) Ethyl alcohol (d) Diethyl ether

Last Answer : Ethyl acetoacetate

An organic compound (A), C3H8O, on oxidation gives (B), C3H6O. The compound (B) could be (a) a carbonyl compound (b) an alcohol (c) a carboxylic acid (d) an ether

Description : An organic compound (A), C3H8O, on oxidation gives (B), C3H6O. The compound (B) could be (a) a carbonyl compound (b) an alcohol (c) a carboxylic acid (d) an ether

Last Answer : a carbonyl compound

Diethyl ether on heating with excess concentrated HI gives (a) Methyl iodide (b) Isopropyl iodide (c) Ethyl iodide (d) n-Propyl iodide

Description : Diethyl ether on heating with excess concentrated HI gives (a) Methyl iodide (b) Isopropyl iodide (c) Ethyl iodide (d) n-Propyl iodide

Last Answer : Ethyl iodide

Ethanol on heating with concentrated H2SO4 at 170°C gives (a) ethylene (b) ethyl hydrogen sulfate (c) diethyl ether (d) diethyl sulfate

Description : Ethanol on heating with concentrated H2SO4 at 170°C gives (a) ethylene (b) ethyl hydrogen sulfate (c) diethyl ether (d) diethyl sulfate

Last Answer : ethylene

Want to know how to get rid of piles ? I have been suffering from piles for the last 2 years. Recently I went to a homeopathic doctor and he assured me that the problem will be reduced in 20-25 days and will get better in 3-4 months with some food medicine and a liquid medicine to apply on the piles. But I haven't noticed any improvement in the medicine for 15 days now, but more frequent itching in the rectum and putting that liquid medicine in the piles, the burning sensation starts immediately and after a while it subsides ... Now I am very nervous and scared about this medicine Turn to cancer !!! Could it really be that ... so what can I do , please help me with some advice ...

Description : Want to know how to get rid of piles ? I have been suffering from piles for the last 2 years. Recently I went to a homeopathic doctor and he assured me that the problem will be reduced in 20-25 days and will ... !!! Could it really be that ... so what can I do , please help me with some advice ...

Last Answer : If you take homeopathic medicine then the homeopathic doctor has rightly said that it will take 3/4 months to get better but you need to consult a piles expert 2 years ago. You can stay. Therefore, a piles ... by the piles doctor. So I said take the advice of a piles expert to get a quick solution.

Why a drop of ether on your skin disappears fast and the skin feels cool?

Description : Why a drop of ether on your skin disappears fast and the skin feels cool?

Last Answer : Ether is a form of alcohol - which evaporates very quickly. Thistakes heat away from your skin, and thus you feel cold in thatarea.

Diethyl ether reacts with cold. HI to give

Description : Diethyl ether reacts with cold. HI to give

Last Answer : Diethyl ether reacts with cold. HI to give A. Ethyl iodide B. Ethyl alcohol C. Both 1 and 2 D. Ethylene

The best conductor of heat among liquid is (a) water (b) mercury (c) ether (d) alcohol

Description : The best conductor of heat among liquid is (a) water (b) mercury (c) ether (d) alcohol

Last Answer : Ans:(b)

Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Description : Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Last Answer : (2) Steam has latent heat Explanation: When water changes into steam, it absorbs latent heat, and when steam condenses to form water, it gives out an equal amount of latent heat. Bums caused ... boiling water, simply because steam contains more heat (in the form of latent heat) than boiling water.