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x^2-3x+2>=0

On heating 1.763 g of hydrated BaCi2 to drynes1.505 g of anhydrous salt remained. Hence theformula of the hydrate is (Atomic weight ofBa 137)3(2) BaCl2-H20(1) BaC12 2 H2O(3) BaCl2 2H2O(4) BaCl2 5H2O

Which non-metal is used in the treatment of rubber during the process of vulcanisation?

At 25 o C, the dissociation constant of a base, BOH is 1.0×10 −12 . The concentration of hydroxyl ions in 0.01M aqueous solution of the base would be:

The correct order of increasing order of oxidising power is

20.In NH3 why lone pair is presnt in Sp3 hybridised orbital

Gold crystallizes in the FCC lattice. Calculate the approximate number of the unit cells in 2 mg of gold (atomic mass of gold is 197 u)

One of the essential alpha amino acid is

Ozone is obtained from oxygen

31. How many amp. are required to liberate 10gm I2 from KI solution in 1 hour. (atomic mass of I = 127) (1) 2.1 amp. (2) 1.1 amp. (3) 0.1 amp. (4) 3.1 amp

The compound P is:

The pressure of a gas is increased 2 times what should be the change in volume so that temperature and number of moles remains constant

The difference between △ H and U for the reaction2CgH6 )+1502(g)6H20 () at 25 C12 CO2(g)+in kJ is(2) +3.72 kJ(1) -7.34 kJ(3)-3.72 kJ(4) +7.43 kJannrav

In a set of reaction m−bromobenzoic acid gave a product D. Identify the Product D.

Why in FeO and FeO3 fe mass of Fe is taken in parts

In which of the following compounds, the oxidation state I atom is highest?

The boiling point of benzene is 353.23 K. When 1.80 g of a non-volatile solute was dissolved in 90 g benzene, the boiling point is raised to 354.11 K. Calculate the molar mass of the solute. (Kb for benzene is 2.53Kkgmol−1)

The rate of reaction doubles when the temperature changes from 300 to 310 K. The activation energy of this reaction is (Assume activation energy and pre-exponential factor are independent of temperature.) ℓn(2) = 0.693 ; R = 8.314 J mol K ) :

What is hydration of ions??

The solubility generally rises with:

Assume that the initial moles of a reactant are a and it's degree of dissociation is x then no. Of moles dissociated from it will be a-x or a-ax, as x is for 1 Mole reactant?

LiAlH4 is obtained by reacting an excess of ___ with an ethereal solution of AlCl3:

Why does the wave function become negative in case of 2s orbital?

No3- draw the structures and also show bond pair and lone pair

Reaction of Zn(OH)2 with NaOH produces:

The vapour compression refrigeration cycle is represented as shown in the figure below, with state 1 being the exit of the evaporator. The coordinate system used in this figure is

Can PCI5 act as an oxidizing as well as a reducing agent? Justify.

20. Which among the following is strongest acid?-(1)P (OH)3 (2)HOClO3 (3)B (OH)3 (4)SO (OH)2.

All transition elelments are d- block elements, but all d - block elements are not transition elements. Explain.

Which of the following is not a resonance structure of the others?

A is a set containing n distinct elements.A non zero subset P of A is chosen at random. The set A is reconstructed by replacing the element of P.A non-zero subset Q of A is again chosen at random. Find the probability that P&Q have no common elements.

4. 20 ml of 0.1 molar NaCl solution is mixed with 20 ml of 0.5 molar AgCl . Find the molarity of Cl ions in the mixture .

Is pus cell and wbc are same

Fructose on reduction gives a mixture of two alcohols which are related as ?

88. What is the difference between gram atom and gram molecule

The conductivity of a saturated solution of CsI3 is 3.06 x 10-2 ohm m-1 and its molar conductance is 1.53 ohm-1 m2 mol-1. The Ksp of Csl3 will be

what is order of stability of elimination product of (1)3hydroxy hex2one (2)3hydroxy hex2one (3) 5hydroxy hex2on

oxidation number of fe2o

CIn which of the following, carbon atom has sextet of electrons? (1) :CH2 () CH4

What is the number of components in image A and the solution in image B?

Glycerol boils at 290oC with slight decomposition. Impure glycerine can be purified by[CPMT 1983, 94]

79 In which compounds does the central atom has d3s hybridisation?

Among the following the antiaromatic compounds are:

The compound which could not act both as oxidizing as well as reducing agent is

Which of the following molecules has zero dipole moment?

Cigarette or gas lighter is made up of

The circumference of the 2nd Bohr orbit of a hydrogen atom is 600 nm. The potential difference that must be applied between the plates so that the electrons have the de-Broglie wavelength corresponding to this circumference is-

P0A and P0B are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If XA represents the mole fraction of component A, the total pressure of the solution will be:

Ordinary water contains one part of heavy water per 6000 parts by weight.The number of heavy water molecules present in a drop of water of volume 0.01 ml is (Density of water is 1 g/ml)