Explore topic-wise InterviewSolutions in Current Affairs.

27. In case of hydride of group 15 bond angle decreases down the group but it is said that the bond angle is less than expected dua lone pair bond pair repulsion and down the group this repulsion decrease so bond angle should increase? ?

1.520 g of the hydroxide of a metal on ignition gave 0.995 gm of oxide.The eq wt of metal is (a)1.520 (b)0.995 (c)19.00 (d)9.00

1 mole of a gas AB3 present in 10 L container dissociates into AB2(g) and B2(g).2AB3(g)⇌2AB2(g)+B2(g)If the degree of dissociation of AB3 is 80%, then final pressure at 600 K is:(Given R=0.082 L atm K−1mol−1)

Electron precise hydride among the following is:

34 How N can show max covalncy of 4 as it can only take 3 electrons

For the reaction, N2O5 gives 2NO2 + 1/2O2 Given - d[N2O5]/dt = K1[N2O5], d[NO2] /dt = K2[N2O5] d[O2] /dt =K3[N2O5] The relation between K1, K2 and K3 is

59. Haemoglobin contains 0.33 percent of iron by weight molecular weight of hemoglobin is approximately 67200 how many atoms are present in one molecule of haemoglobin

explain acidic order of fluoro phenols?

The ordinate of influence line at D for reaction at E in figure below is 0.25

Find the product B and C.

In the reaction, NH4NO2(aq.)→N2(g)+2H2O(l), the volume of N2 after 20 min and after a long time is 40 mL and 70 mL respectively. The value of rate constant is:(Given: Order of reaction = First order)

CsBr crystallises in a body centered cubic lattice. The unitcell length is 436.6 pm. Given that the atomic mass of Cs=133 and that of Br =80 amu. the density of CsBr is (a) 0.425 g/cm3(b) 4.25 g/cm() 8.5 g/cm3(d) 82.5 g/cm3

Match the correct combination : Column IColumn IIA) B2H6P) Lewis acidB) BF3Q) TetrahedralC) AlCl3R) sp3 hybridisationD) BH−4S) Planar molecule

What will happen if sodium chloride is crystallised with a little amount of strontium chloride?

3 g of a salt of molecular mass 30 is dissolved in 250 g of water. The molality of the solution is:

Which of the following hydrolysis product is not common in hydrolysis of XeF2 and XeF4 respectively?

in licl and nacl which has more conduc†an ce and why?

How many chiral centers are present in the following compound?

Crude sodium chloride contains impurities of:

What is covalent bonding?

Asolution of glucose in water is labelled as 10% w/w, what would bethe molality and mole fraction of each component in the solution? Ifthe density of solution is 1.2 g mL−1,then what shall be the molarity of the solution?

Is the NH3 ligand strong field ligand generally and weak field ligand for Co(+3) and Cr ? If so, why?

21. The correct order of increasing solubility of AgCl2 in (a) Water (B) 0.1 M Nacl (C)0.1 M BaCl2 (D)0.1 M NH3

1.Calculate the percentage degree of dissociation of an electrolyte AB(normal molar mass = 164) in H20tobserved molar mass is 65.6(1) 50%(2) 25%(3) 75%4)none

At room temperature the rms speed of the molecules of certain diatomic gas is found to be 1930m/s.the gas is 1.hydrogen. 2.fluorine. 3.oxygen 4. Chlorine.

Out line the principles of refining metals by the following method: Zone refining Electrolytic refining Vapour phase refining

10. If the unit cell mineral has ccp array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ion and n fraction of tetrahedral holes occupied by magnesium ion, m and n respectively are 1.) 1/2,1/8 2.) 1,1/4 3.)1/2,1/2 4.) 1/4,1/8

calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride

Is milliequivalent is equal to 10-3 of gram equivalent? In which cases we use milliequivalent ? And when no. of moles is equal to milliequivalents ?

Cyclohexane, a hydrocarbon floats on water because (a) it is immiscible with water (b) it's density is low as compared to water (c) it is non-polar substance (d) it is immiscible and lighter than water

Define the termsA. EquilibriumB. Entropy

Difference between adiabatic wall and insulated wall.

What is substituted alkene?

An electromagnetic radiation with the highest wavelength results when an electron in He+ ion from n=4 jumps to:

Choose the correct options regarding 'B' and 'C' in the following sequence of reactions:

25. What will be absolute mobility if limiting molar conductivity of Li+ ion is 10 unit in cgs

10. If the weight of metal chloride is x gram containing y gram of metal the equivalent weight of metal will be?

In a cubic lattice if atoms are present only at all the corners and alternate face centres then the packing efficiency will be

What makes hydroxide ion act as nucleophile and why does it get an overall charge of -1?

Find the value of 60Joule/min in a system100g, 100 cm, and 1 min as the base units.

Describethe change in hybridisation (if any) of the Al atom in the followingreaction.

Let -2

Describe the preparation of potaislum dichromate from iron ohromite ore. What is the effect of increasing pH on a solution of potassium dichromate?

3.0 g of magnesium is burnt with 0.48 g O2 in a closed vessel. Which reactant is left in excess and how much?(Atomic mass of Mg and O are 24 u and 16 u respectively)

18. What is the relation between osmotic pressure (π) and relative lowering of vapour pressure? Show Derivation.

The number of electrons required to balance the following equation areNO−3+4H++e−⟶2H2O+NO

The extent of adsorption of gases on solids depends on the:

o-Toluic acid on reaction with Br2+Fe gives: