The atomic number of Lanthanum is 57. Its electronic configuration will be ...........

Arrange the following electrolytes in the increasing order of van't Hoff factor (i) for complete dissociation of solute.
(A) \(\left[ Co \left( NH _3\right)_6\right] Cl _3\)
(B) \(MgCl _2\)
(C) \(K _4\left[ Fe ( CN )_6\right]\)
(D) KCl
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Which of the following compound is a gem-dihalide?

Match List I with List II

LIST I	LIST II
A. Gatterman-Koch reaction	I. Diphenyl
B. Stephens reaction	II. Ethyl amine
C. Hoffmann Bromamide degradation	III. Benzaldehyde
D. Fittig reaction	IV. Acetaldehyde

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Which of the following combinations are correct?

Enzyme	Final product formed
A. Maltase	Glucose
B. Pepsin	Ammonia and \(CO _2\)
C. Urease	Amino acid
D. Zymase	Ethanol and \(CO _2\)
E. Diastase	Glucose

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On passing ammonia gas through a solution of copper sulphate, a deep blue solution is obtained.
The deep blue colour of the solution is due to the formation of :

The properties which depend on the number of solute particles irrespective of their nature relative to the total number of particles in the solution are called colligative properties. These are relative lowering of vapour pressure of the solvent, depression of freesing point of the solvent, elevation of boiling point of the solvent and osmotic pressure of the solution. All of these properties help in calculating the observed molar mass of the solute.
Determination of osmotic pressure is considered best for the determination of molecular mass of the solute.
Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane.
(A) Cycloheptane
(B) NaCl
(C) \(CH _3 OH\)
(D) \(CH _3 CN\)
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Identify the correct statements.
(A) Electric charge is quantized.
(B) Electric charge on any object is always an integral multiple of e.
(C) The coulomb force is weaker than the gravitational force.
(D) The coulomb force is a conservative force.
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Henry was the first to give a quantitative relation between pressure and solubility of a gas in a solvent.
Choose the correct statement given by Henry.

Choose the incorrect statement from the following:

Magnetic material that moves from stronger to weaker part of magnetic field is:

\(\left|\begin{array}{lll}1 & 2 & 3 \\4 & 5 & 6 \\7 & 8 & 9\end{array}\right|=x\left|\begin{array}{ll}2 & 3 \\8 & 9\end{array}\right|+y\left|\begin{array}{ll}1 & 3 \\7 & 9\end{array}\right|+z\left|\begin{array}{ll}1 & 2 \\7 & 8\end{array}\right|\)
Then \(x+y+z\) is:

If \(\int_0^1\left(3 x^2+2 x+5 k\right) d x=0\), then the value of \(k\) is: