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Which of the polyhalide ions is not known?

75.WHY IN AN OPEN CONTAINER BOTH PRESSURE AND VOLUME REMAINS CONSTANT ?

How to calculate n factor?

The molecule having dipole moment is

If x be real, then the minimum value of x2−8x+17 is

For the gaseous reaction A (g) + 2B (g) -------> 2C (g) + D (g) Initial concentration of B was 1.5 times of A . At equilibrium concentration of A and C is equal . Find the value of Kp.

The value of equilibrium cons†an t for reaction is 16, HgO(s) = Hg(g) + 1/2O2(g) . The partial pressure of oxygen gas will be

What does rods and cones do when stimulated by light.

The carbonyl group has following resonating structure. The correct order of stability of these structures is:

For the Reaction PCl5(g) ⇌ PCl3(g) + Cl2(g) at 400K & 1atm, degree of dissociation of PCl is0.4. Calculate the vapour density of equilibriummixture under given condition? ( )(1) 60.80 (2) 50.10 (3) 74.28 (4) 98.12

1. How does stoichiometric defect makes the crystals good Ionic conductors, and not non-stoichiometric defects?

How will half body diagonal of a cubic void be √3a/2??

Convert Propyne to Propene.

If an element is in its lowest oxidation state under proper conditions, it can act as

how to determine hybridization in heterolaptic coordination compound

A metal is formed by the thermal decomposition of

Which of the following will play an important role in controlling the rate of hardening of the cement?

A pure sample of N2O5 gas contains 0.01 moles. Find the volume occupied by the gas sample at standard temperature and pressure conditions (STP).

One molal solution of benzoic acid in benzene boils at 81.53 ∘C. The normal boiling point of benzene is 80.10 ∘C. Assuming that the solute is 90% dimerized, the value of Kb i.e. ebullioscopic constant for benzene is:

17. In the preparation of Buna-N peroxides are act as catalysts here free radical mechanism proceeds or not ?

What is equipotential surface

Acompound is formed by two elements M and N. The element N forms ccpand atomsof M occupy 1/3rdof tetrahedral voids. What is the formula of the compound?

In the HCl molecyule, the separation between the nuclei of the two atoms is about 1.27 A(1 A=10-10 m). The approximate location ofcentre of mass of the molecule, assuming the chlorine atom to be about 35.5 times as massive as hydrogen is(A) IA(C) 1.24 A(B) 2.5 A(D) 1-5

48. For the reaction 2N2O5-->4no2+o2. The following data is given Time(minutes). p(n2o5) ATM 0. 800 100. 400 200. 200

Lassaigne's test for the detection of nitrogen will fail in the case of:

10 % of 250 is ___

32. Why monosacharides having cyclic structure

Which is the correct relation between de-brogile wavelength of an electron in the nth orbit and radius of the orbit R

what is the product obtained on hydrolysis of beryllium carbid

When 5.85 g of NaCl and 6 g of urea are dissolved in 1000 g of water, the freezing point gets depressed by Kf for water is 1.86

The number density offree electrons in a copper conductor estimated in Example 3.1 is 8.5× 1028 m−3. How long does anelectron take to drift from one end of a wire 3.0 m long to its otherend? The area of cross-section of the wire is 2.0 × 10−6m2 and itis carrying a current of 3.0 A.

53. What is the electrode potential of Mg^{+2} \vert Mg electrode at 25 degree Celsius in which the concentration of Mg^{+2} is 0.01M. E _{{Mg^{+2} \vert Mg } }= -2.36V

logKPKC+logRT=0 is a relationship for the reaction:

The structural formula of cocaine is shown below. How many stereogenic carbon atoms are there in this molecule ?

Why is the water acidified in the process of electrolysis of water?

Exceptional properties of hydrogen

The correct set of quantum numbers among the following is:

How much of sulphur is present in an organic compound if 0.53 gram compound give 1.158 gram of BaSo4 on analysis?

(a) Classifyfollowing oxides as neutral, acidic, basic or amphoteric: CO,B2O3,SiO2,CO2,Al2O3,PbO2,Tl2O3(b) Writesuitable chemical equations to show their nature.

12. Total number of possible isomers of [Pt(NH3)2(NO2)2] are? 1)12 2)15 3)6 4)5

Identify the correct structure of 3-methylidenepenta-1,4-diene.

Reserpine is

'Aspartame' does not contain

What is Cracking of Petrol? What are the differences between Cracking and Fractional Distillation?

How to write electronic configuration of 1to 50

4.3 g of saturated hydrocarbon (CnH(2n+2)) is burnt completely and all CO2 were absorbed in aqueous NaOH solution. A 300 mL of a 2 M NaOH solution was required for complete absorption of CO2. Hence find the value of n.

How does a non ideal solution become cold (as it is endothermic process)

Which of the following describes the correct relation for hydrolysis constant (Kh) for a salt of weak acid and weak base at 25∘C ?

Nitrogen and hydrogen combine in the ratio of 14 : 3 by mass to form ammonia. The mass of nitrogen required to react completely with 9 g of hydrogen is

Which of the following is the major monohalo product of the given reaction?