A person adds 1.71 gram of sugar in order to sweeten his tea. The number of carbon atoms added are —

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Aayush Asked Jan 30

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Aayush Asked Feb 1

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Caffeine has a molecular weight of 194 . It contains about 30% by mass of nitrogen. The number of atoms of nitrogen in one molecule of it is :

Aayush Asked Feb 1

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ALOK_RAJ Asked Aug 19, 2023

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What approximate volume of 0.40 M Ba(OH)2 solution must be added to 50.0 mL of 0.30 M NaOH solution to get a solution in which the molarity of the OH− ions is 0.50 M?

ALOK_RAJ Asked Aug 19, 2023

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ALOK_RAJ Asked Aug 18, 2023

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300 ml of 3.0 M NaCl solution is added to 200 ml of 4.0 M BaCl2 solution. The concentration of Cl− ions in the resulting solution is —

ALOK_RAJ Asked Aug 18, 2023

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Aayush Asked Jan 31

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1.5 x 10^22 atoms of an element weight about 0.9 g. The atomic mass of the element (in amu) is —

Aayush Asked Jan 31

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Aayush Asked Jan 31

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A sample of oxygen containing 4/Ν_Α mol of oxygen is represented on a Y-map where its volume at NTP, mass of the sample and number of particles are shown. Study the map & choose the correct option.

Aayush Asked Jan 31

by Aayush

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ALOK_RAJ Asked Aug 18, 2023

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The number of moles of Phosphoric acid H3PO4 that can be produced, by allowing 0.8 moles of H2, 0.9 moles of P4 and 1 mole of O2 to combine according to the given unbalanced reaction, is :

ALOK_RAJ Asked Aug 18, 2023

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Chandan Asked Aug 9, 2023

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A4: 1 molar ratio mixture of helium and methane is contained in a vessel at 10 bar pressure. Due to a hole in the vessel, the gas mixture leaks out. The molar ratio composition of the mixture effusing out initially is :

Chandan Asked Aug 9, 2023

by Chandan

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ANAND_YADAV Asked Aug 8, 2023

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If the number of molecules of SO2 (molecular weight =64 ) effusing through an orifice of unit area of cross-section in unit time at 0∘C and 1 atm pressure is n

ANAND_YADAV Asked Aug 8, 2023

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Aayush Asked Feb 1

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An organic compound on analysis was found to contain 0.032% of Sulphur by mass. The molecular mass of the compound, if its one molecule contains two Sulphur atoms, is :

Aayush Asked Feb 1

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Aayush Asked Feb 1

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A 10% w/w solution of cane sugar has undergone partial inversion according to the reaction : Sucrose + water →glucose + fructose . The boiling point of the solution is 100.7°C. What fraction of sugar has inverted?

Aayush Asked Feb 1

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Chandan Asked Aug 9, 2023

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Which of the following is correct order of temperature shown in the above graph Z Vs P for the same gas:

Chandan Asked Aug 9, 2023

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ANAND_YADAV Asked Aug 8, 2023

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The ratio of the rate of diffusion of a given element to that of helium is 1.4. The molecular weight of the element is (under same temperature and pressure)

ANAND_YADAV Asked Aug 8, 2023

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ANAND_YADAV Asked Jul 30, 2023

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61.25% (w/w) H2SO4 stock solution has a density of $1.6 g mL ^{-1}$. The molecular weight of H2SO4 is $98 g mol ^{-1}$. The volume $( mL )$ of stock solution required to prepare a 200 mL solution of 0.3 M H2SO4 is :

ANAND_YADAV Asked Jul 30, 2023

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Chandan Asked Aug 9, 2023

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5 mL of He gas diffuses out in 1 second from a hole. Find the volume of SO2 that will diffuse out from the same hole under identical conditions in 2 seconds.

Chandan Asked Aug 9, 2023

by Chandan

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ANAND_YADAV Asked Aug 8, 2023

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The density of a mixture of O2 and O3 at NTP is 1.75 g / L. The partial pressure of O3 in the mixture under the above conditions is

ANAND_YADAV Asked Aug 8, 2023

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Aayush Asked Feb 2

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0.05 mole of LiAIH4 in ether solution was placed in a flask containing 74g (1 mole) of t-butyl alcohol. The product LiAIHC12H27O3 weighed 12.7 g. If Li atoms are conserved, the percentage yield is —

Aayush Asked Feb 2

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Chandan Asked Aug 26, 2023

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The curve of pressure volume (PV) against pressure (P) of the gas at a particular temperature is as shown, according to the graph which of the following is incorrect (in the low pressure region):

Chandan Asked Aug 26, 2023

by Chandan

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Shakti Asked Dec 20, 2021

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Sulphur exist in different allotropic forms like S2, S6 and S8 etc. If equal moles of these three forms are taken in separate containers, then the ratio of number of atoms present in them respectively is

Shakti Asked Dec 20, 2021

by Shakti

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ALOK_RAJ Asked Jul 25, 2023

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39.4 kg of gold was recovered from a Smuggler. The number of atoms of gold recovered are —

ALOK_RAJ Asked Jul 25, 2023

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AnjaliYadav Asked Sep 25, 2022

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The Vander Waals constant 'a' for the gases CH4, N2, NH3 and O2 are 2.25,1.39, 4.17 and 1.3 $L ^{2}$ $atm-mol^{-2}$ respectively. The gas which shows highest critical temperature is :

AnjaliYadav Asked Sep 25, 2022

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Aayush Asked Feb 2

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A, B and C elements have the oxidation number of +6, -2 and -1 respectively. The possible molecular formula when these atoms combine can be —

Aayush Asked Feb 2

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ALOK_RAJ Asked Aug 18, 2023

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An ideal gas undergoes a process in which $T=T_{0}+a V^{3}$; where $T_{0}$ and 'a' are positive constants and V is molar volume. The molar volume for which pressure will be minimum is

ALOK_RAJ Asked Aug 18, 2023

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Chandan Asked Aug 9, 2023

113 views

A gaseous mixture contains three gases A, B and C with a total number of moles of 10 and total pressure of 10 atm.

Chandan Asked Aug 9, 2023

by Chandan

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ALOK_RAJ Asked Aug 18, 2023

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Which of the following molarity values of ions in an aqueous solution containing 5.85 % w/v NaCl , 5.55 % w/v CaCl2 and 6% w/v NaOH is/are correct :

ALOK_RAJ Asked Aug 18, 2023

by ALOK_RAJ

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Chandan Asked Aug 9, 2023

197 views

Equal masses of sulphur dioxide and oxygen are mixed in an empty container at $25^{\circ} C$. The fraction of the total pressure exerted by sulphur dioxide is :

Chandan Asked Aug 9, 2023

by Chandan

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197 Views

Shakti Asked Dec 20, 2021

115 views

The density of a liquid is 1.2g/mL. There are 35 drops in 2 mL. The number of molecules in one drop

Shakti Asked Dec 20, 2021

by Shakti

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5 Votes

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Chandan Asked Aug 9, 2023

171 views

The rate of effusion of helium gas at a pressure of 1000 torr is 10 torr $\min ^{-1}$. What will be the rate of effusion of hydrogen gas at a pressure of 2000 torr at the same temperature :

Chandan Asked Aug 9, 2023

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ALOK_RAJ Asked Sep 16, 2022

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The virial equation for 1 mole of a real gas is written as :

ALOK_RAJ Asked Sep 16, 2022

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Aayush Asked Feb 2

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If 6.3 g of NaHCO3 are added to 15.0 g of CH3COOH solution, the residue is found to weight 18.0 g. What is the mass of CO2 released in this reaction?

Aayush Asked Feb 2

by Aayush

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Aayush Asked Feb 1

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Calculate individual and average oxidation number (if required) of the marked element of the following compounds.

Aayush Asked Feb 1

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Chandan Asked Aug 9, 2023

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50g of H2 is placed in a vessel of constant volume and temperature. A hole is punctured in the vessel and left in vacuum. The pressure of H2 in the vessel will vary with time as

Chandan Asked Aug 9, 2023

by Chandan

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ANAND_YADAV Asked Aug 8, 2023

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Two glass bulb A and B are connected by a very small tube of negligible volume having stopcock

ANAND_YADAV Asked Aug 8, 2023

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Aayush Asked Feb 22

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Calculate the number of atoms in 0.2 mole of sodium (Na).

Aayush Asked Feb 22

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ALOK_RAJ Asked Aug 19, 2023

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5g of K2SO4 was dissolved in water to prepare 250 ml of solution. what volume of this solution should be used so that 2.33g of BaSO4 may be precipitated from BaCl2 solution.

ALOK_RAJ Asked Aug 19, 2023

by ALOK_RAJ

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ALOK_RAJ Asked Nov 19, 2023

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The weight of 350mL of a diatomic gas at 0°C and 2 atm pressure is 1.0 g. Calculate the weight of an atom in gram.

ALOK_RAJ Asked Nov 19, 2023

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A person adds 1.71 gram of sugar in order to sweeten his tea. The number of carbon atoms added are —

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