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An antifriction alloy made up of antimony with tin and copper, which is extensively used in machine bearings is called _______.
(B) Babbitt metal
Which of the following pairs is an intensive property?
(A) Density, viscosity
(B) Surface tension, mass
(C) Viscosity, internal energy
(D) Heat capacity, volume
Fe2+ ions react with nitric oxide formed from reduction of nitrate and yields a brown coloured complex _______.
MnO2 and Ca3(PO4)2 present in iron ore get reduced to Mn and P in the zone of _______.
(D) slag formation
An ionic compound crystallises in FCC type structure with ‘A’ ions at the centre of each face
and ‘B’ ions occupying corners of the cube. The formula of compound is _______.
On passing 1.5 F charge, the number of moles of aluminium deposited at cathode are _______ [Molar mass of Al = 27 gram mol–1]
For a chemical reaction, A→ products, the rate of reaction doubles when the concentration of
‘A’ is increased by a factor of 4, the order of reaction is
Derive the relationship between relative lowering of vapour pressure and molar mass of nonvolatile solute.
Define the term ‘enthalpy’.
What will happen to the internal energy if work is done by the system?
Write the electronic configuration of the following elements:
a.Sulphur (Z = 16) b. Krypton (Z = 36)
0.05 M NaOH solution offered a resistance of 31.6 Ω in a conductivity cell at 298 K. If the
cell constant of the cell is 0.367 cm-1, calculate the molar conductivity of NaOH solution.
Calculate ΔH° for the reaction between ethene and water to form ethyl alcohol from the
ΔcH° C2H5OH(l) = -1368 kJ
ΔcH° C2H4(g) = -1410 kJ
Does the calculated ΔH° represent the enthalpy of formation of liquid ethanol?
In the Arrhenius equation for a first order reaction, the values of ‘A’ of ‘Ea’ are 4 x 1013 sec-1 and 98.6 kJ mol-1 respectively. At what temperature will its half life period be 10 minutes?
[R = 8.314 J K-1 mol-1]
State the first law of electrolysis
State second law of electrolysis
Write any ‘two’ uses of each of the following:
Distinguish between crystalline solid and amorphous solid
A solution of a substance having mass 1.8 x 10-3 kg has the osmotic pressure of 0.52 atm at 280 K. Calculate the molar mass of the substance used.
[Volume = 1 dm3, R = 8.314 J K-1 mol-1]
Derive an expression for maximum work in isothermal reversible expansion of two moles of an ideal gas.
The boiling point of benzene is 353.23 K. When 1.80 gram of non-volatile solute was dissolved in 90 gram of benzene, the boiling point is raised to 354.11 K. Calculate the molar mass of solute.
[Kb for benzene = 2.53 K kg mol-1]
When primary amine reacts with CHCl3 in alcoholic KOH, the product is _______.
(D) an isocyanide
`CH_3-CH_2-Br"Alcoholic KOH"/""> B " HBR"/"">C"Na/Eather"/"">D`, the Compound D is
Cisplatin compound is used in the treatment of _______.
(D) yellow fever
A gas when passed through K2Cr2O7 and dil. H2SO4 solution turns it green, the gas is
Which of the following vitamins is the vitamin of alicyclic series?
(A) Vitamin C
(B) Vitamin K
(C) Vitamin B
(D) Vitamin A
Which of the following is the first oxidation product of secondary alcohol?
(D) Carboxylic acid
Write the chemical equations involved in the following reactions:(i) Hoffmann-bromamide degradation reaction
What is ‘effective atomic number’ (EAN)?
Calculate the effective atomic number of the central metal atom in the following compounds:
a. K4Fe(CN)6 Fe(Z=26)
b. Cr(CO)6 Cr(Z=24)
Write the different oxidation states of iron
Why +2 oxidation state of manganese is more stable?
What are nucleic acids? Mention their two important functions.
Define complex lipids
Mention 'two' functions of lipids
What will be the action of the mixture of sodium nitrite and dilute hydrochloric acid on ethyl amine
What will be the action of the mixture of sodium nitrite and dilute hydrochloric acid on aniline
What will be the action of the mixture of sodium nitrite and dilute hydrochloric acid on diethyl amine
How is Nylon 6, 6 prepared?
What are ‘antacids’?
Write any ‘two’ side effects of tranquilizers.