Description : 2 ml each of concentrated HCl, HNO3 and a mixture of concentrated hydrochloric acid and Concentrated nitric acid in the ratio of 3:1were taken in test tubes labelled as A, B and C, A small piece of metal was put in ... the metal dissolved in test tube C. The metal could be: A) Al B) Au C) Pt D) Cu
Last Answer : B) Au
Description : A compound X' on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound Y'. X' also reacts with sodium metal to evolve a colourless gas Z'. Identify X', Y' ... the chemical reaction of formation of Y' and also write the role of sulphuric acid in the reaction. -Science
Last Answer : X-Ethanol/ (C2H5OH)/Ethyl AlcoholY- Ethene / (C2H4)Z- Hydrogen/ (H2)Role of sulphuric acid - dehydrating agent
Description : Take a 250 mL beaker/glass tumbler. Fill half of it with water. Now carefully cut a small piece of sodium metal. Dry it using filter paper and wrap it in a small piece of cotton. Put the sodium piece wrapped in cotton into the beaker. Observe carefully. -Science
Last Answer : On touching the beaker, it was felt hot. The solution turns the red litmus paper to blue which shows it is basic in nature. Blue litmus paper do not show any colour change with the solution.
Description : The products formed in the reaction of cumene with `O_(2)` followed by treatment with dil. HCl are :
Last Answer : The products formed in the reaction of cumene with `O_(2)` followed by treatment with dil. HCl are : A. B. C. D.
Description : Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → ... oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride
Last Answer : (a) Iron + Chlorine → Iron (III) chloride 4Fe + 3Cl2 → 2F2Cl3 (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water 2Mg + 2H2SO4 → 2MgSO4 + 2H2 (c) Magnesium + oxygen → Magnesium oxide 2Mg ... hydroxide CaO + H2O → Ca(OH)2 (e) Sodium + chlorine → Sodium chloride 2Na + Cl2 → 2NaCl
Description : How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal? -Science
Last Answer : Bring a burning matchstick near the gas. It burns with ‘pop’ sound showing that it is hydrogen gas.
Description : What is the resulting concentration (in molL) of aqueous hydrochloric acid if 500 mL of its gaseous form at 300 K and 100 kPa will be dissolved in 100 mL pure water Use 8.314 kPaL(Kmol)?
Last Answer : Feel Free to Answer
Description : To a 25 mL `H_(2)O_(2)` solution excess acidified solution of Kl was added. The iodine liberated 20 ml of 0.3 N sodium thiosulphate solution. Use thes
Last Answer : To a 25 mL `H_(2)O_(2)` solution excess acidified solution of Kl was added. The iodine liberated 20 ml of ... strength of `H_(2)O_(2)` is 1.344 L
Description : The colour observed when hydrochloric acid and Fehling’s solution is added to test sugar
Last Answer : is reddish.
Description : The chemical added to test the presence of sugar are hydrochloric acid and Fehling’s
Last Answer : solution.
Description : The volume of `0.1 N` dibasic acid sufficient to neutralize 1g of a base that furnishes `0.04` mole of `OH^-` in aqueous solution is :
Last Answer : The volume of `0.1 N` dibasic acid sufficient to neutralize 1g of a base that furnishes `0.04` mole of `OH^-` ... 400 mL B. 600 mL C. 200 mL D. 80 mL
Description : Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and ... (c). X- Sulphuric acid and Y- Hydrogen gas (d). X- Hydrochloric acid and Y- Hydrogen gas
Last Answer : (c). X- Sulphuric acid and Y- Hydrogen gas
Description : Write balanced equation for the reaction between magnesium and hydrochloric acid. Name the product obtained, identify the type of reaction. -Chemistry
Last Answer : Answer. The product formed is magnesium chloride and hydrogen gas. It is a displacement reaction.
Description : A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives carbonate back..Identify X and Y. (a) X is sodium carbonate and Y is Sodium hydroxide (b) X ... Y is calcium hydroxide (c ) X is Potassium carbonate and Y is Potassium hydroxide. (d) None of above
Last Answer : (b) X is Calcium carbonate and Y is calcium hydroxide
Description : Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry
Last Answer : i hope it helped you
Description : In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of hydrochloric acid is used primarily to
Last Answer : In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of ... nitrous acid D. neutralize the base liberated
Description : The main component of liquid bleach is: (1) Sodium chloride (2) Sodium hypochlorite (3) Hydrochloric acid (4) Sodium hypochlorate
Last Answer : (2) Sodium hypochlorite Explanation: Sodium hypochlorite bleaches are also called chlorine or liquid household bleach. They are the more powerful laundry bleaches; they are used to whiten and disinfect ... either 5.25 percent (regular strength) or 6 percent sodium hypochlorite (ultra strength).
Description : In sewage treatment, its sedimentation is speeded up by commonly adding (A) Hydrochloric acid (B) Lime (C) Copper sulphate (D) Sodium sulphate
Last Answer : (B) Lime
Description : Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid
Last Answer : (A) Sulphuric acid
Description : Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid
Last Answer : ANSWER: Z -- 0.1 MOLAR HYDROCHLORIC ACID
Description : Which of the following aqueous solutions would hav the lowest boiling point? Would it be a 1.0 molal solution of: w) Hydrochloric acid x) Sodium Hydroxide y) Acetic Acid, z) Magnesium Chloride
Last Answer : ANSWER: Y -- ACETIC ACID
Last Answer : Sodium hypochlorite
Description : The major product (B) formed in the reaction sequence is: `overset(Ph-overset(O)overset(||)(C)-CI)underset(dil.NaOH)rarrA overset(1.CH_(3)MgBr)underse
Last Answer : The major product (B) formed in the reaction sequence is: `overset(Ph-overset(O)overset(||)(C)-CI)underset(dil. ... )overset(||)(C)-CH_(3)` B. C. D.
Description : What is the color of zinc metal? What happens to its color when zinc reacts with the hydrochloric acid?
Last Answer : Answer. Silverfish gray. When zinc reacts with HCl, the resulting solution becomes colorless (white) and zinc turns into black colored zinc chloride.
Description : 10.(a) An ore on treatment with dilute hydrochloric acid produces brisk effervesces. What type of ore is this? What steps will be required to obtain metal from the enriched ore. , (b) ... in coin and colour of the solution ? Write balanced chemical equation of the reaction involved. -Chemistry
Last Answer : (a) Carbonate ore: (i) Calcination: Carbonate ore is heated in limited supply of air and oxide is obtained, e.g. (b) Copper, being more reactive than silver will displace silver from silver nitrate ... and there will be deposition of silver on copper coin. The colour of solution will turn to blue.
Description : 3 gram of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the fitr
Last Answer : 3 gram of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was ... B. `36 mg` C. `42 mg` D. `54 mg`
Description : (a) What is the role of hydrochloric acid in our stomach ? -Science
Last Answer : Hydrochloric acid: It makes the medium of gastric juice acidic so that the enzyme pepsin can digest the proteins properly and also kills any bacteria that might have entered the stomach with food.
Description : Nickel made/clad equipments are suitable for handling (A) Ammonia (both aqueous & anhydrous) (B) Fruit juices, milk & its products and caustic soda solution (C) Nitric acid & hydrochloric acid (concentrated) (D) Sulphuric acid (concentrated)
Last Answer : (B) Fruit juices, milk & its products and caustic soda solution
Description : A single covalent bond (a) Is formed by the transfer of two electrons (b) Exists between hydrogen and chlorine in an aqueous solution, of hydrochloric acid (c) Is longer than a double bond (d) Does not require energy to disrupt it unlike an ionic bond
Last Answer : Ans:(c)
Description : What happen when a solution of potassium chromate is treated with an excess of dil. Nitic acid?
Last Answer : What happen when a solution of potassium chromate is treated with an excess of dil. Nitic acid? A. `Cr^( ... CrO_4^(2-)` is oxidized to +7 state of Cr
Last Answer : What happen when a solution of potassium chromate is treated with an excess of dil. Nitic acid? A. Cr reduces ... (2-)` and `H_(2)O` will be formed.
Description : Which gas is liberated when Calcium carbonate is reacted with dil acid ?
Last Answer : It reacts with dilute acid to liberate carbon dioxide.
Description : Name the gas liberated when alkali metals react with dil acid?
Last Answer : The alkaline earth metals readily react with acids liberating dihydrogen gas . M + 2HCl →→MCl2 + H2
Description : A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,
Last Answer : Answer: (c) White, BaSO4
Description : The formula of product formed, when sodium thiosulphate solution is added to silver bromide is
Last Answer : The formula of product formed, when sodium thiosulphate solution is added to silver bromide is A. `Na_(3)[Ag(S_(2)O_ ... `Ag_(3)[Na(S_(2)O_(3))_(2)]`
Description : Jailbroke 1g iPod touch, killed battery?
Last Answer : You do suffer a bit of battery loss post-jailbreak. Many jailbroken apps are able to run in the background, which apple doesn't allow. Also, make sure you turned your brightness down. I didn't see ... life. All the apps you get from jailbreaking are certainly worth the battery life, at least to me.
Description : What's the best iPod touch 1G mic?
Last Answer : the only one I know of is the TouchMods one (google it). I don’t know if Fring supports it or not though, but there is a jailbroken app that does.
Description : What is the best way to put free videos on a ipod touch 1g?
Last Answer : There are all sorts of video converters, but none of the good ones are free. The good ones are usually fully configurable and convert all types of video into another type as well as set up the screen ... use the Daniusoft suite. I think that I paid au$39.00 for the whole suite, DVD & Video files.
Description : Can I trade my 2G for a 1G?
Last Answer : most likely not.
Description : Is it worth it to upgrade my iMac from 1G RAM to 2 or 4G RAM?
Last Answer : YES! More RAM allows the system to open programs faster, and better manage multiple programs. I am a fairly basic computer user myself, but I always get as much RAM as I can afford.
Description : Volume occupied one molecule of water `(density = 1g cm^(-3))` is :-
Last Answer : Volume occupied one molecule of water `(density = 1g cm^(-3))` is :- A. `3.0 xx 10^(-23) cm^(3)` B. `5.5 ... 23) cm^(3)` D. `6.023 xx 10^(-23) cm^(3)`
Description : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium cholride. To this 1g mol.of alkaline solution of phenol i
Last Answer : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium ... Predict the major product. Explain your answer.
Description : A radioactive sample has a half life 1500 years. A sealed tube conataining 1g of the sample will contain after 3000 years,
Last Answer : A radioactive sample has a half life 1500 years. A sealed tube conataining 1g of the sample will contain ... g of the sample D. 0.01g of the sample
Description : Which one is greater 17.1g or 17.1 mg?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : Which of the following is an enhancement of GSM including the GPRS? A. 1G B. 2.5G C. 2G D. 3G
Last Answer : B. 2.5G
Description : Density of water is 1G/CC. it is strictly valid at –
Last Answer : 40C
Description : One calorie is the heat required to raise the temperature of 1g of water by how many degrees?
Last Answer : 1°C
Description : Indian post gold coin denomination is a) 0.2 g, 2g, 5 g and 8 g of 24 carat (99.99% pure) a) 1 g, 2g, 6 g and 10 g of 24 carat (99.99% pure) a) 0.5 g, 1g, 5 g and 8 g of 24 carat (99.99% pure) a) None of these
Last Answer : a) 0.5 g, 1g, 5 g and 8 g of 24 carat (99.99% pure)
Description : Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal the hardness of water and a gas C is evolved. The gas C when passed through lime water ,turns it ... © A is baking soda ,B is washing soda and C is carbon dioxide (d) both a and c
Last Answer : (d) both a and c
Description : A solution containing `Na_(2)CO_(3)` and `NaOH` requires `300 ml` of `0.1 N HCl` using phenolphthalein as an indicator. Methyl orange is then added to
Last Answer : A solution containing `Na_(2)CO_(3)` and `NaOH` requires `300 ml` of `0.1 N HCl` using phenolphthalein ... solution is `(NaOH=40, Na_(2)CO_(3)=106)`