Carbonyl carbon in acetone is \(\mathrm{sp}^2\) hybridized. The C-O-C bond angle and the geometry of acetone is.......

IUPAC name of the isomer of compound with molecular formula, \(FeCl _3 \cdot 6 H _2 O\) having \(i=3\) is :

Answer the question on the basis of passage given below :
There are three kinds of amines which are primary, secondary and tertiary amines. These amines may have alkyl group or aryl group or both alkyl and aryl groups. These amines can be distinguished from one another by various chemical tests.
An amine A on treatment with \(\text{NaNO}_2\) and \(\text{HCl}\) at 273-277 K, followed by treatment with ethyl alcohol, gives a compound B with empirical formula CH and molecular mass 78.
A is :

Gabriel phthalimide synthesis method is used for the preparation of :

Choose the incorrect statement from the following:

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Werner in 1898, propounded his theory of coordination compounds. In coordination compounds metals show two types of linkages (valences)-primary and secondary. The primary valences are normally ionisable and are satisfied by negative ions. The secondary valences are non-ionisable. These are satisfied by neutral molecules or negative ions. The secondary valence is equal to the coordination number and is fixed for a metal. The ions or group bound by the secondary linkages to the metal have characteristic spatial arrangements corresponding to the different coordination numbers. Both double salts as well as complexes are formed by the combination of two or more stable compounds in stoichiometric ratio. However, they differ in the fact that double salts such as carnallite, Mohr's salt, potash alum etc. dissociate into simple ions completely when dissolved in water. But complex ions do not dissociate completely into simple ions.
Which of the following statement is correct as per Werner theory?

If we use molten \(\text{NaCl}\), the products of electrolysis are __________ .

Samples of benzaldehyde and acetaldehyde can be distinguished by using

Aravalli Hills of Rajasthan and Khasi and Jaintia Hills in Meghalaya are the examples of:

When light of suitable frequency is incident on a photosensitive material, photo electrons are ejected and photoelectric current flows. If the intensity of the incident light is increased, then

Two nuclei have mass numbers 125 and 27, respectively. The mass density ratio of their nuclei will be

Which of the following is a molecular solid?

A die is thrown twice. The probability of occurrence of 5 at least once is: