An organic compound was analysed to give following percentage composition by mass —

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Aayush Asked Feb 2

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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 :

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AnjaliYadav Asked Oct 9, 2022

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The element X and Y form a compound which contains the element in ratio of 1: 3 by mass. If their vapor density are in ratio of 2: 3 find empirical formula of compound.

AnjaliYadav Asked Oct 9, 2022

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ALOK_RAJ Asked Sep 2, 2023

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An organic compound CxH2yOy was burnt with twice the amount of oxygen needed for complete combustion to CO2 and H2O.

ALOK_RAJ Asked Sep 2, 2023

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Aayush Asked Jan 30

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75 mL of H2SO4 solution (specific gravity = 1.18), containing 49% H2SO4 by mass, is diluted to 590 mL. Calculate molarity of the diluted solution.

Aayush Asked Jan 30

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ALOK_RAJ Asked Sep 2, 2023

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0.9g of a solid organic compound (mol. wt. 90) containing carbon, hydrogen, and oxygen was heated with oxygen corresponding to a volume of 224mL at STP

ALOK_RAJ Asked Sep 2, 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

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Aayush Asked Jan 31

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Which of the following has maximum mass?

Aayush Asked Jan 31

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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 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 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

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ALOK_RAJ Asked Jan 24, 2022

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कार्बनिक यौगिक किसे कहते हैं? Carbonic Yaugik Kise Kahate Hain?

ALOK_RAJ Asked Jan 24, 2022

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Chandan Asked Aug 9, 2023

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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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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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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

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Aayush Asked Feb 1

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The density of water at $4^{\circ} C$ is $1 \times 10^{3} kg m ^{-3}$. Assuming no empty space to be present between water molecules, the volume occupied by one molecule of water is approximately :

Aayush Asked Feb 1

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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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ANAND_YADAV Asked Aug 8, 2023

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According to Graham's law at a given temperature, the ratio of the rates of diffusion of gases A and B is given by :

ANAND_YADAV Asked Aug 8, 2023

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Aayush Asked Feb 22

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What is the mass of 4 moles of aluminum atoms?

Aayush Asked Feb 22

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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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Chandan Asked Aug 9, 2023

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Dissolving 120 g of urea (molar mass 60 ) in 990 g of water gave a solution of density 1.11 g / ml. Select the correct statements :

Chandan Asked Aug 9, 2023

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Chandan Asked Oct 6, 2023

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Phosphorus and chlorine form two compounds. The first compound contains 22.54% by mass of phosphorus while the second compound contains 14.88% phosphorus. Show that the data supports the law of multiple proportions.

Chandan Asked Oct 6, 2023

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test Asked Jun 8, 2022

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The minimum molar mass of a compound containing 3.2 % oxygen by mass is

test Asked Jun 8, 2022

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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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Aayush Asked Jan 30

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Which of the following methods of expressing concentration of a solution is/are independent of temperature?

Aayush Asked Jan 30

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ALOK_RAJ Asked Dec 20, 2023

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Which of the following contains the same number of atoms as 6g of magnesium?

ALOK_RAJ Asked Dec 20, 2023

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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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Chandan Asked Aug 9, 2023

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For a real gas under low pressure conditions, which of the following graph is correct?

Chandan Asked Aug 9, 2023

by Chandan

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ALOK_RAJ Asked Nov 22, 2023

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One atom of an element X weighs 6.644 × 10^-23 g. Calculate the number of g-atom in 40 kg of it.

ALOK_RAJ Asked Nov 22, 2023

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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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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

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A real gas most closely approaches the behaviour of an ideal gas at :

Chandan Asked Aug 9, 2023

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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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ANAND_YADAV Asked Jul 30, 2023

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When white phosphorus reacts with caustic soda, the products are PH3 and NaH2PO2. This reaction is an example of :

ANAND_YADAV Asked Jul 30, 2023

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ALOK_RAJ Asked Sep 16, 2022

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An ideal gas can't be liquefied because —

ALOK_RAJ Asked Sep 16, 2022

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Chandan Asked Sep 12, 2023

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When 150 mL of ozonized oxygen was passed through a red hot tube, the volume increased by 10 mL. The percentage of ozone in the sample was :

Chandan Asked Sep 12, 2023

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An organic compound was analysed to give following percentage composition by mass —

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