The volume of mixing (ΔV) is not zero for which of the following solutions ?

Choose the correct statement/statements for Cannizaro reaction.
A. Takes place in aldehydes and ketones having absence of \(\alpha\)-hydrogen
B. Takes place in aldehydes having absence of \(\alpha\)-hydrogen
C. It is a disproportionation reaction
D. Get a mixture of carboxylic acid salt and ethers
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Answer the question on the basis of passage given below :
All transition elements display typical metallic properties like high melting point, boiling point, tensile strength, high malleability and ductility, luster, etc. Their metallic character increases down the group and elements of \(4 d\) and 5d series exhibit higher metallic characters. They show variable oxidation states and forms a number of coloured compounds due to the presence of unpaired electrons which shows d-d transitions and makes them paramagnetic.
Which of the following will be coloured in aqueous medium?

Read the passage carefully and answer the questions
Amines are considered as derivatives of ammonia obtained by replacement of hydrogen atoms with alkyl or aryl groups. In nature they occur among proteins, vitamins, alkaloids and hormones. These can be primary, secondary or tertiary depending on the number of hydrogen groups replaced. They can be prepared from nitro compounds, alkyl halides, nitriles, amides etc. Due to unshared pair of electrons they behave as Lewis bases. Influence of the number of hydrogen atoms at nitrogen atom is displayed in physical properties such as solubility, boiling point and chemical reactions including basicity. Basic character of amines is expressed in terms of their K, and pK; values. Three classes of amines can be distinguished with p-toluene sulphonyl chloride which reacts with primary and secondary mines. Amino group when ttached to benzene ring behaves as an activating and ortho para directing group.
Give the IUPAC name of the compound

Arrange the following in order of increasing boiling points
(A) 1,4-Dichlorobenzene
(B) 1,3-Dichlorobenzene
(C) 1,2-Dichlorobenzene
(D) Chlorobenzene
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Answer the question on the basis of passage given below :
There are some deposits of nitrates and phosphates in the earth’s crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under laboratory conditions, but microbes do it easily. Ammonia forms a large number of complexes with transition metals. Hybridisation easily explains the ease of sigma donation capability of NH₃ and PH₃. Phosphine is an inflammable gas, it is prepared from white phosphorus.
NH₃ is a stronger base than PH₃ because:

Which compound will exhibit the lowest boiling point ?

The radius of the innermost electron orbit of a hydrogen atom is \( 5.3 \times 10^{-11} \text{ m} \). The radius of the third orbit is:

A long solenoid carrying a current produces a magnetic field B along its axis. If the value of current is halved and the number of turns per unit length is doubled then the new value of magnetic field is:

Question: In the complex ion \(\left[ Fe \left( C _2 O _4\right)_3\right]^{3-}\), the coordination number of Fe is:

For a manufacturer, total cost function is given by \(C=\frac{x^2}{25}+2 x\). Which of the following are correct ?
A. 2.6 is the marginal cost when 5 units are produced.
B. \(\frac{2 x}{25}+2\) is the marginal cost function.
C. \(\frac{x}{25}+2\) is the average cost function.
D. 2.4 is the marginal cost when 5 units are produced.
E. \(\frac{x}{25}+1\) is the average cost function.
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Let A = {1, 2, 3}. The number of equivalence relations containing (1, 3) is

Match List-I with List-II

List-I (Physical property)	List-II (Expression)
(A) G (conductance)	(I) \(1/(RA)\)
(B) R (resistance)	(II) \(A/(\rho l)\)
(C) \(\kappa\) (Specific conductance)	(III) \(\kappa/c\)
(D) \(\Lambda_m\) (molar conductance)	(IV) \(l/(\kappa A)\)

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