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Which out of the following is aromatic hydrocarbon?

At 400K, the root mean square (rms) speed of a gas X (molecular weight=40) is equal to the most probable speed of gas Y at 60 K.The molecular weight of the gas Y is_________.

60. Electrolysis of 50 litre aqueous solution of CH3COONa was done bypassing 2F of electricity. The pH of the solution and the gaseous products obtained at anode and cathode are respectively

how to do graphical representation of inverse of a function?

30. in the presence of an acid catalyst, two alcohol molecules will undergo dehydration to give ?

The relationship between molality (m) and mole fraction (χA) of the solvent is:

what would be the expected product of the reaction of propyne with Br_2/H_2O if the mechanism of this reaction is ana\log ous to that of propen

how C6H5COOH acidity less than that of C6H5-CH2-COOH?

In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg pressure. The percentage composition of nitrogen in the compound is. (Round off to the nearest integer). [Given: Aqueous tension at 287 K=14 mm of Hg]

27. How many mol Fe+2 ions are formed when excess of iron is treated with 50ml of 4M HCl inert temperature assume no change in volume 1)0.4 2)0.1 3)0.2 4)0.8

The correct order of boiling point is:

The osmotic pressure of equimolar solutions of urea, BaCl2 and AlCl3 will be in the order-

Question 9The Soap molecule has a(a) Hydrophilic head and hydrophobic tail(b) Hydrophobic head and hydrophilic tail(c) Hydrophobic head and hydrophobic tail(d) Hydrophilic head and hydrophilic tail

do alcohols dissociate or associate in water and benzene?

In the reaction x,y and z are

Correct order of heat of hydrogenation is:

Which of teh following will have hishest ksp for their sulphide 1. Zn2+ , Cu2+2 Zn 2+, Mn 2+3 Cd 2+ , Bi 2+4 Pb2+ , Hg2+

The green colour produced in the borax bead test of a chromium (III) salt is due to:

The general formula for calculating the volume of a unit cell is

The element having lowest first ionization potential among Sr, As, S and F and why ?

what is the order of acidic strength 1. cyclohexanol 2. acetic acid 3. 2,4,6, trinitro phenol 4. phenol

for rxn CO +2H2 =CH3OH if active mass of CO is kept constant and active mass of hydrogen is tripled the rate of forward rxn will be ?

When 1 mole of CrCl3.6H2O is treated with excess of AgNO3, 3 moles of AgCl are obtained. The formula of the complex is (a) [CrCl3(H2O)3]3H2O (b) [CrCl3(H2O)4]Cl2.2H2O (c) [CrCl3(H2O)5]Cl2.H2O (d) [Cr(H2O)6]Cl3

How does the oxidation number of oxygen changes when oxygen reacts with fluorine

5. Total no of lone pair of electrons in triiodide ion I3-

Complete Reaction of alkyne with grignards reagent

Find the ratio of de broglie wavelength of molecules of hydrogen and helium which are at a temperature of 27 degrees celsius and 127 degrees respectively

Which metal(s) can be used to produce electrons by the photoelectric effect from given source of light?

In the reaction of phenol with CHCl3 and aqueous NaOH, the electrophile attacking the ring is :

The hybridization of the central atom in the vapor state of BeCl2 is:

The number of atoms present in 0.1 mole of p​​​​​​4 is

value of cos15/2 degree

44. In any ionic crystal A has formed cubic close packing and B atoms are present at every tetrahedral voids. If any sample of crystal contain `N' number of B atoms then number of A atoms in that sample is

12 g of non volatile solute having (Molar mass=120 g/mol) was dissolved in 9.9 mol of solvent. If the vapour pressure of pure solvent is P∘A, the vapour pressure of solution is:

Analyze the following reaction and identify the nature of A and B

Explain thin film interference

ntTHE FIRST ORDER REACTION IS 40% COMPLETE IN 40 MINUTES .WHAT PERCENTAGE WOULD REMAIN UNREACTED AT THE END OF 80 MINUTES?n

In a F.C.C. lattice, atom X occupies the corner positions and atom Y occupies face centred positions. If all the atoms are missing from one of the face diagonal, the formula of the compound is

OH Br | |CH3-O-CH-CH-CH3 + HBr gives CH3-O-CH-CH-CH3 | | CH3 CH3explain the mechanism

Identify the binary mixture(s) that can be separated into individual compounds, by differential extraction, as shown in the given scheme.

For the reaction: A(g)+B(g)→C(g) At STP 30 g of gas A reacts with 11.2 L of gas B and produces gas C, which is diatomic. Calculate the number of atoms in C. (Molar mass of A = 60 g/mol, NA is Avogadro's number )

Completethe following acid-base reactions and name the products:(i) CH3CH2CH2NH2+ HCl (ii) (C2H5)3N+ HCl

In acid medium, the standard reduction potential of NO converted to N2O is 1.59 V. Its standard potential in alkaline medium at 298 K would be

Between emission spectrum and absorption spectrum

In the following compounds, the decreasing order of basic strength will be:

CH3−CH2−CH2−CH2−C||CH2−CH2−CH2−CH3

The insecticide chlordane is warmed with dilute NaOH solution for some time. The expected product would be:

Derive the packing fraction of Diamond

Among the following, the usual test of ferrous iron is not given by

Find the binding energy per nucleon for 12050Sn. Mass of proton mp=1.00783 U, mass of neutron mn=1.00867 U and mass of tin nucleus mSn=119.902199 U. (take 1 U=931 MeV)

The number of atoms present in 0.1 mole of p4 is