In which of the following options, the molecules are correctly matched with their atomicity —

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Aayush Asked Jan 31

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Aayush Asked Jan 31

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If 10^21 molecules are removed from 200 mg of CO2, then the number of moles of CO2 left are —

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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 :

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ALOK_RAJ Asked Apr 24, 2022

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Shakti Asked Dec 20, 2021

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

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ALOK_RAJ Asked Aug 31, 2023

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Which of the following statements regarding compressibility factor (Z) is/are correct :

ALOK_RAJ Asked Aug 31, 2023

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ALOK_RAJ Asked Aug 31, 2023

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Which of the following statements is/are correct about Boyle temperature $\left(T_{B}\right)$ :

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test Asked Jun 8, 2022

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Which of the following are isotopes

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by test

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Aayush Asked Jan 30

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What volume of 0.25 M HNO3 (nitric acid) solution reacts with 50 mL of 0.15 M Na2CO3 (sodium carbonate) solution in the following reaction —

Aayush Asked Jan 30

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Chandan Asked Aug 4, 2023

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Different Type of Speed of Gas Molecules

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Aayush Asked Jan 30

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K2Cr2O7 + C2O4^2– + H2SO4 → K2SO4 + CO2 + Cr2(SO4)3 + H2O. In above reaction, identify the elements which do not undergo change in their oxidation state —

Aayush Asked Jan 30

by Aayush

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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

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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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ALOK_RAJ Asked Aug 26, 2023

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In the following reaction, 3A(g) + B(g) ⇌ 2C(g) + D(g), Initial moles of B is double of A. At equilibrium, moles of A and C are equal. Hence % dissociation of B is :

ALOK_RAJ Asked Aug 26, 2023

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Chandan Asked Sep 15, 2023

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Two elements X (at. mass =16) and Y (at. mass =14) combine to form compounds A, B and C. The ratio of different masses of Y which combines with a fixed mass of X in A, B and C is 1: 3: 5.

Chandan Asked Sep 15, 2023

by Chandan

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ANAND_YADAV Asked Aug 8, 2023

158 views

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

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by ANAND_YADAV

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Chandan Asked Sep 15, 2023

86 views

Oxidation state of nitrogen is correctly given for :

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Aayush Asked Jan 31

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Which of the following has maximum mass?

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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?

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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 Sep 12, 2023

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Iodine molecule dissociates into atoms after absorbing light of 4500 Å. If one quantum of radiation is absorbed by each molecule, calculate the kinetic energy of iodine atoms.

Chandan Asked Sep 12, 2023

by Chandan

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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 :

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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

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Chandan Asked Aug 9, 2023

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2KI + I2 + 22 HNO3 $\rightarrow$ 2HIO3 + 2KIO3 + 22NO2 + 10H2O ; If 3 mole of KI & 2 moles I2 are reacted with excess of HNO3. Volume of NO2 gas evolved at NTP is

Chandan Asked Aug 9, 2023

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Chandan Asked Aug 9, 2023

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At the critical point for H2 gas, value of Z =3 / 8. Then, the value of Z for the similar conditions of CO2, O2, SO2 at their respective critical points will be :

Chandan Asked Aug 9, 2023

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Aayush Asked Feb 2

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In Haber process, 30 L. of dihydrogen and 30 L of dinitrogen were taken for reaction which yielded 50% of the expected product.

Aayush Asked Feb 2

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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

by ALOK_RAJ

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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 2

44 views

The oxidation number of Sulphur in S6, S2F2 and H2S respectively are —

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 —

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Aayush Asked Jan 30

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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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Chandan Asked Sep 11, 2023

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In a reaction A (g) + 2 B (g) $\rightleftharpoons$ 2 C (g), 2 moles of ' $A ^{\prime}, 3$ moles of 'B' and 1 mole of 'C' are placed in a 2 L flask and the equilibrium concentration of 'C' is 1 mol / L.

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Chandan Asked Aug 26, 2023

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Infinite numbers of flasks are connected to one another as shown above. The volumes and pressures in each flask vary as shown. The stopcocks are initially closed. The common pressure, when all the stopcocks are opened, is

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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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Shakti Asked Dec 20, 2021

270 views

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

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ALOK_RAJ Asked Jan 24, 2022

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ALOK_RAJ Asked Jan 24, 2022

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In which of the following options, the molecules are correctly matched with their atomicity —

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