Rare gases are - (1) Mono atomic (2) di atomic (3) tri atomic (4) none of above

Rare gases are - (1) Mono atomic (2) di atomic (3) tri atomic (4) none of above
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(1) Mono atomic Explanation: The so-called "rare" gases Neon (Ne), Krypton (Kr) and Xenon (Xe), are present in air in very low concentrations.
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The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with ammonia ions to form (A) Mono-chloramine (NHCl) (B) Di-chloramine (NH2Cl) (C) Nitrogen tri-chloramine (NCl3) (D) All the above

Description : The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with  ammonia ions to form  (A) Mono-chloramine (NHCl)  (B) Di-chloramine (NH2Cl)  (C) Nitrogen tri-chloramine (NCl3)  (D) All the above

Last Answer : (D) All the above

How can tri substitution of Bromine be prevented in aniline ? OR How can we prepare mono bromo aniline ?

Description : How can tri substitution of Bromine be prevented in aniline ? OR How can we prepare mono bromo aniline ?

Last Answer : Because of high reactivity of aromatic amines substitution tends to occur at o- and ppositions. Monosubstituted aniline can be prepared by protecting — NH2 group by acetylation with acetic anhydride, then carrying out substitution followed by hydrolysis of substituted amide.

Drugs following one compartment open model pharmacokinetics eliminate (A) bi-exponentially (B) tri-exponentially (C) non-exponentially (D) mono-exponentially

Description : Drugs following one compartment open model pharmacokinetics eliminate (A) bi-exponentially (B) tri-exponentially (C) non-exponentially (D) mono-exponentially

Last Answer : (D) mono-exponentially

The characteristic equation of gases pv = mRT holds good for (a) mono atomic gases (b) diatomic gases (c)real gases (d) ideal gases

Description : The characteristic equation of gases pv = mRT holds good for (a) mono atomic gases (b) diatomic gases (c)real gases (d) ideal gases

Last Answer : Ans: c

Microsomal hydroxylase system contains a (A) Di-oxygenase (B) Mono-oxygenase (C) Both (A) and (B) (D) None of thse

Description : Microsomal hydroxylase system contains a (A) Di-oxygenase (B) Mono-oxygenase (C) Both (A) and (B) (D) None of thse

Last Answer : Answer : B

Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Description : Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Last Answer : (A) Fluorapatite

The main constituent of rock phosphate is (A) Mono-calcium phosphate (B) Di-calcium phosphate (C) Fluorspar (D) None of these

Description : The main constituent of rock phosphate is (A) Mono-calcium phosphate (B) Di-calcium phosphate (C) Fluorspar (D) None of these

Last Answer : (B) Di-calcium phosphate

________ present in air helps in combustion of fuel. a) oxygen b)nitrogen c)carbon-di-oxide d)carbon –mono-oxide

Description : ________ present in air helps in combustion of fuel. a) oxygen b)nitrogen c)carbon-di-oxide d)carbon –mono-oxide

Last Answer : a) oxygen

The compound of Portland cement which reacts immediately with water and also sets first is (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Description : The compound of Portland cement which reacts immediately with water and also sets first is (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Last Answer : Answer: Option C

Initial setting of cement is caused due to (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Description : Initial setting of cement is caused due to (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Last Answer : Answer: Option C

The compound of Portland cement which contributes to the strength after two to three years is (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra-calcium alumino ferrite

Description : The compound of Portland cement which contributes to the strength after two to three years is (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra-calcium alumino ferrite

Last Answer : Answer: Option B

Pick up the compound responsible for early strength of cement from the following: (A) Tetra-calcium alumino-ferrite (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) Di-calcium silicate

Description : Pick up the compound responsible for early strength of cement from the following: (A) Tetra-calcium alumino-ferrite (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) Di-calcium silicate

Last Answer : Answer: Option B

Good quality cement contains higher percentage of (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Description : Good quality cement contains higher percentage of (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Last Answer : Answer: Option A

Ultimate strength to cement is provided by (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Description : Ultimate strength to cement is provided by (A) Tri-calcium silicate (B) Di-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Last Answer : Answer: Option B

Rapid hardening cement contains (A) Tri-calcium silicate (B) Tri-calcium aluminate (C) Tetra-calcium alumino-ferrite (D) Di-calcium silicate

Description : Rapid hardening cement contains (A) Tri-calcium silicate (B) Tri-calcium aluminate (C) Tetra-calcium alumino-ferrite (D) Di-calcium silicate

Last Answer : Answer: Option A

In the cement the compound quickest to react with water, is (A) Tri-calcium aluminate (B) Tetra-calcium alumino-ferrite (C) Tri-calcium silicate (D) Di-calcium silicate

Description : In the cement the compound quickest to react with water, is (A) Tri-calcium aluminate (B) Tetra-calcium alumino-ferrite (C) Tri-calcium silicate (D) Di-calcium silicate

Last Answer : Answer: Option A

The main constituent of cement which is responsible for initial setting of cement is (A) Di-calcium silicate (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) All of the above

Description : The main constituent of cement which is responsible for initial setting of cement is (A) Di-calcium silicate (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) All of the above

Last Answer : Answer: Option C

To retard the initial setting time of cement, the compound responsible, is (A) Tri-calcium silicate (B) Gypsum (C) Di-calcium silicate (D) Tri-calcium aluminate

Description : To retard the initial setting time of cement, the compound responsible, is (A) Tri-calcium silicate (B) Gypsum (C) Di-calcium silicate (D) Tri-calcium aluminate

Last Answer : Answer: Option B

The constituent of cement which is responsible for all the undesirable properties of cement is (A) Di-calcium silicate (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Description : The constituent of cement which is responsible for all the undesirable properties of cement is (A) Di-calcium silicate (B) Tri-calcium silicate (C) Tri-calcium aluminate (D) Tetra calcium alumino ferrite

Last Answer : Answer: Option C

H2S is scrubbed from refinery gases by absorption using (A) Dilute H2SO4 (B) Ethanol amine (C) Chilled water (D) Tri-butyl phosphate

Description : H2S is scrubbed from refinery gases by absorption using (A) Dilute H2SO4 (B) Ethanol amine (C) Chilled water (D) Tri-butyl phosphate

Last Answer : (B) Ethanol amine

An element with an atomic number of 17 is - (1) an alkali metal (2) a rare gas (3) a halogen gas (4) a transition metal

Description : An element with an atomic number of 17 is - (1) an alkali metal (2) a rare gas (3) a halogen gas (4) a transition metal

Last Answer : (3) a halogen gas Explanation: Chlorine has atomic number of 17. It is a halogen gas along with fluorine (F), bromine (Br), iodine (I), and astatine (At).

I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal which oxidizes readily at room temperature and is an important factor in color television tubes. The atomic number of this element is 58. What is this element?

Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal ... factor in color television tubes. The atomic number of this element is 58. What is this element?

Last Answer : ANSWER: CERIUM (Ce)

Why are noble gases called rare gases?

Description : Why are noble gases called rare gases?

Last Answer : Because they are chemically inert (or noble) due to the presence of completely filled orbitals.

Why are noble gases called rare gases?

Description : Why are noble gases called rare gases?

Last Answer : Because they are chemically inert (or noble) due to the presence of completely filled orbitals.

At high pressure, the entire metal surface gets covered by a mono molecular layer of the gas. What is the order of the process ?

Description : At high pressure, the entire metal surface gets covered by a mono molecular layer of the gas. What is the order of the process ?

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What is Tri-Molecular Reaction ?

Description : What is Tri-Molecular Reaction ?

Last Answer : If the number of molecules in a reactant participating in a chemical reaction is three, it is called tri-molecular reaction.

What is the common name for 2,4,6, Trinitrotoluene (read: tri-nitro-toluene)?

Description : What is the common name for 2,4,6, Trinitrotoluene (read: tri-nitro-toluene)? 

Last Answer : ANSWER: TNT

The fuel used in an atomic reactor is – (1) Coal (2) Petrol (3) Combustable gases (4) Uranium

Description : The fuel used in an atomic reactor is – (1) Coal (2) Petrol (3) Combustable gases (4) Uranium

Last Answer : (4) Uranium Explanation: A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the propulsion of ships ... . Some produce isotopes for medical and industrial use, and some are run only for research.

why do noble gases have bigger atomic size than halogens?

Description : why do noble gases have bigger atomic size than halogens?

Last Answer : Ans.Noble gases have higher atomic size than halogens because Van der Waals radii are bigger than covalent radii.

The fuel used in an atomic reactor is (1) Coal (2) Petrol (3) Combustable gases (4) Uranium

Description : The fuel used in an atomic reactor is (1) Coal (2) Petrol (3) Combustable gases (4) Uranium

Last Answer : Uranium

Di-tert butyl ether cannot be made by Williamson’s synthesis. Explain why ?

Description : Di-tert butyl ether cannot be made by Williamson’s synthesis. Explain why ?

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Planar Platinum compounds are being investigated in the treatment of cancer. Name the isomers of dichlorodiamineplatinum(II) (pron: die-klor-o-di-a-MIN-e-plat-i-num two)?

Description : Planar Platinum compounds are being investigated in the treatment of cancer. Name the isomers of dichlorodiamineplatinum(II) (pron: die-klor-o-di-a-MIN-e-plat-i-num two)?

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The gas that causes suffocation and death when coal or coke is burnt in a closed room is (1) Methane (2) Ethane (3) Carbon monoxide (4) Carbon di–oxide

Description : The gas that causes suffocation and death when coal or coke is burnt in a closed room is (1) Methane (2) Ethane (3) Carbon monoxide (4) Carbon di–oxide

Last Answer : Carbon monoxide

Dry ice is the solid form of : (1) Air (2) Carbon di–oxide (3) Nitrogen (4) Water

Description : Dry ice is the solid form of : (1) Air (2) Carbon di–oxide (3) Nitrogen (4) Water

Last Answer : Carbon di–oxide

Bleaching action of moist sulphur di-oxide is because of its (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Description : Bleaching action of moist sulphur di-oxide is because of its (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Last Answer : oxidising property

Has anyone tried the mono diet?

Description : Has anyone tried the mono diet?

Last Answer : I had to research what the mono diet was and here in a nutshell is an explanation. The other approach to this diet is eating mono meals, or eating one food, macro nutrient, or ... diet's followers that they are likely to experience fatigue, a decreased metabolism, malnourishment, and muscle loss.

If you live with someone who has mono, what can you do to protect yourself?

Description : If you live with someone who has mono, what can you do to protect yourself?

Last Answer : I think you’re good so long as you avoid swapping saliva with them in some way – sharing drinks, food, kissing, etc.

What's that word - meaning "unanimous" or "of one mind", in mono- form?

Description : What's that word - meaning "unanimous" or "of one mind", in mono- form?

Last Answer : I can’t think of a mono- word, but how about homogeneous?

How long does it take to recover from mono?

Description : How long does it take to recover from mono?

Last Answer : It took my son several months to fully recover.

Dual mono to stereo headphones?

Description : Dual mono to stereo headphones?

Last Answer : If you get a headphone splitter and plug in two sets you should be able to put the left ear of both sets in and hear in both ears. It will still just be the left side though, and you’ll have the right sides just dangling.

Do I have mono or something else?

Description : Do I have mono or something else?

Last Answer : Your college should have a local health center where they provide you with free doctor services. They charge a bit for medicine, if you need it, but the prices are cheaper than elsewhere, and the ... is free. Your tuition fees already include these services, so you might as well make use of it.

Chain type coding structure is also known as________ a.Poly code b.Mono code c.Hybrid code d.Miscellaneous code

Description : Chain type coding structure is also known as________ a.Poly code b.Mono code c.Hybrid code d.Miscellaneous code

Last Answer : a.Poly code

From the following in which type of GT code tree-type structure is used? a.Poly code b.Hybrid code c.Mono code d.None of the above

Description : From the following in which type of GT code tree-type structure is used? a.Poly code b.Hybrid code c.Mono code d.None of the above

Last Answer : c.Mono code

From the following in which type of GT code chain-type structure is used? a.Poly code b.Hybrid code c.Mono code d.None of the above

Description : From the following in which type of GT code chain-type structure is used? a.Poly code b.Hybrid code c.Mono code d.None of the above

Last Answer : a.Poly code

____ is a collection of parts which have similar characteristics a.Part family b.Mono family c.GT family d.Poly family

Description : ____ is a collection of parts which have similar characteristics a.Part family b.Mono family c.GT family d.Poly family

Last Answer : a.Part family

When is Mono FM Band launched ?

Description : When is Mono FM Band launched ?

Last Answer : Mono FM band was started in 1948.

How to complete a business property statement for mono county?

Description : How to complete a business property statement for mono county?

Last Answer : Need Answer

The volume of nitrogen gas Um (measured at STP) required to cover a sample of silica get with a mono-molecular layer is `129 cm^(3) g^(-1)` of gel. Ca

Description : The volume of nitrogen gas Um (measured at STP) required to cover a sample of silica get with a mono-molecular layer is `129 cm^(3) g^(-1)` of gel. Ca

Last Answer : The volume of nitrogen gas Um (measured at STP) required to cover a sample of silica get with a mono-molecular layer ... `16.2 xx 10^(-20) m^(2).`

How do you differentiate a mono dispersed system from a poly dispersed system?

Description : How do you differentiate a mono dispersed system from a poly dispersed system?

Last Answer : Mw/Mn=1 Mono disperse Polymer sample consisting of molecules allof which have the same chain length Mw/Mn>1 Poly dispersePolymer consisting of molecules with the variety of chainlength.

What are the Effect of mono economy?

Description : What are the Effect of mono economy?

Last Answer : What is the answer ?