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1. FeSO4 is a very good absorber for NO,the new compound formed by this process is found to contain number of unpaired electrons: (A) 4 (B) 5 (C) 3 (D) 6

Find out the names of three metals and three non-metals from the given fig.

A beaker contains 0.1 M H2SO4 solution; of 100 ml. Another 100 ml of it is added to the beaker. (I) What is the initial number of moles of H+ ions? ​(II) What is the final number of moles of H+ ions?

Highest oxidation number of the carbon atom in the product formed by the reductive ozonolysis of the given compound, is:

is shape of hexagonal unit cell is hexagonal

is acetylene carboanion more stable than benzylic

71 Molecular weight of KMnO4 in acidic medium and neutral medium will be respectively

What volume of 95% H​​​​​​2​​​​​​SO​​​4 having density 1.85g/ml and what mass of water must be taken 100 ml of 50% H​​​​​2​SO4 having density 1.10 g/ml

44. 0.75 gram of a mixture containing Na2CO3 and K2CO3 needs 50 ml of 0.25 Normality HCl for complete neutralisation find percentage combination

When we should take p0-ps/p0 and p0-ps/ps if moles of solute are not given?

In case of sp^3d^3 hybridisation state which bond is longer axial or equatoria

What are vector laws?

The functional group present in a molecule having the formula C12O9 is

Each C-atom in diamond is - hybridized

if the mass of each molequel of a gas is reduced to 1/3rd of its revious value and speed is doubled ,then find the ratio of initial speed and final pressure

44. The correct order of stability of given carbocation is: 1. NO_2-CH_2-CH_2^+ 2. NH_2-CH_2-CH_2^+ 3. CH_3-O-CH_2^+ 4. HO-CH_2^+ 5. NH_2-CH_2^+ 6. NO_2-CH_2^+ 7. CH_3O-CH_2-CH_2^+ 1.7>3>2>4>5>1>6 2. 5>3>4>2>6>1>7 3. 5>4>3>2>7>1>6 4. 6>1>7>3>2>5>4

In a thermodynamic process two moles of a monatomic ideal gas obeys P o V-2. If temperature of the gas increases from 300 K to 400 K, then find work done by the gas (where R universal gas constant) (2) -200 R (4) -400 R (1) 200 R (3)-100 R

6.EA order of nitrogen family??

Calculate [OH−] of 0.03 M ammonium hydroxide solution. The ionization constant for NH4OH is 1.8×10−5 M.

25. What is the osmotic pressure of 0.1 M NaCl solution at 27^° C?

Entropy change involved in conversion of one mole of liquid water at 373 K to vapour at the same temperature (latent heat of vaporisation of water =2.257 kJg−1).

39. The total number of orbitals in a shell with Principal quantum number n is

62. How many electrons are there in 3rd shell of a atom with atomic number 23

26. Explain the three essential conditions for Hybridization with reference to BeCl2

If a peron is carrying a box and a bucket full of water , then will it be easier for him to carry the box , if the box is dropped in the bucket ?

Explain the order of boiling pt between alkane alkene alkyne in detail.

Compound which has the highest pKa is:[0.77 Mark]

Match the elements given in columb I with the propertie mentioned in Column II. ColumnIColumnIIA.Li1.Insoluble! sulphateB.Na2.Strongest monoacidic baseC.Ca3.Most negative E⊝value among alkaliD.Ba4.Insoluble oxalate5.6s2Outer electronic configuration

Sodium and oxygen combine to form two compounds, one being Na2O. The amount of sodium in the other compound is 59% by weight. Find the formula of this compound.

What is quantum number?

Electrolytes when dissolved in water dissociates into ions because[CPMT 1974, 78; MNR1983]

27. A metal chloride dissolve endothermic , if 7.45 g of its anhydrous form dissolve in excess of of water the amount of heat absorbed is X KJ. Calculate enthalpy of solution if molar mass mass of chloride is 74.5

A and B in the following reactions are:

Which of the following can be separated by usingsodium bisulphite?(1) Acetaldehyde and Benzaldehyde(2) Acetone and Acetaldehyde(3) Pentan-2-one and Pentan-3-one(4) All of these

Which elements from D block shows minimum oxidation States?? And maximum oxidation States??

The volume of 0.05 M KMnO4 solution required to oxidize completely 2.70 g of Oxalic acid (H2C2O4.2H2O) in acidic medium will be:

In a Cu-voltameter, the mass deposited in 30 s is ′m′ g. If the time-current graph is shown in the following figure, what is the electrochemical equivalent of Cu?

In what reaction of the following, work is done by the system on the surroundings?(a) Hg (l) → Hg (g)(b) 3O2 (g) → 2O3 (g)(c) H2 (g) + Cl2 (g) → 2HCl (g)(d) N2 (g) + 3H2 (g) → 2NH3 (g)

why in Nacl the coordination number of na ion is 6 why not 12 ?

Polyatomic atom

In the reaction,C6H5CH3+CrO3+(CH3CO)2O→P

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is:

10 g of CaCO3 is completely decomposed to X and CaO. X is passed into an aqueous solution containing one mole of sodium carbonate. What is the number of moles of sodium bicarbonate formed?

The minimum distance covered before attaining aspeed of 8 m/s starting from rest is nearly (u = 0.4)(take g 10 m/s2)6.(1) 8 m(2) 4 m(3) 10 m(4) 16 m

what is poisson's ratio?

Which of the following relations is/are correct?

Why are halogens coloured?

The total number of diprotic acids among the following is H3PO4H2SO4H2CO3H2S2O2H3BO3H3PO2H2CrO4H2SO3 ___

evaluate: limx→2 e^ (x−2) / log(x^2−3)

A beaker contains 0.1 M H2SO4 solution; of 100 ml. Another 100 ml of it is added to the beaker. (I) What is the initial number of moles of H+ ions? (II) What is the final number of moles of H+ ions?

What volume of 95% H2SO4 having density 1.85g/ml and what mass of water must be taken 100 ml of 50% H2SO4 having density 1.10 g/ml