A chemist has 4 samples of artificial sweetener A, B, C and D. To identify these samples, he performed certain experiments and noted the following observations : (i) A and D both form blue-violet colour with ninhydrin. (ii) Lassaigne extract of C gives positive AgNO3 test and negative Fe4[Fe(CN)6]3 test. (iii) Lassaigne extract of B and D gives positive sodium nitroprusside test Based on these observations which option is correct ?

The antifertility drug “Novestrol” can react with :

Match the following drugs with their therapeutic actions : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} (i) Ranitidine (a) Antidepressant (ii) Nardil (Phenelzine) (b) Antibiotic (iii)Chloramphenicol (c) Antihistamine (iv)Dimetane (Brompheniramine) (d) Antacid (e) Analgesic

The mechanism of action of ''Terfenadine'' (Seldane) is :

If a person is suffering from the deficiency of nor-adrenaline, what kind of drug can be suggested?

The following molecule acts as an :

When gypsum is heated to 393 K, it forms :

Among the statements (a)-(d) the correct ones are : (a) Lithium has the highest hydration enthalpy among the alkali metals. (b) Lithium chloride is insoluble in pyridine. (c) Lithium cannot form ethynide upon its reaction with ethyne. (d) Both lithium and magnesium react slowly with H2O.

The metal mainly used in devising photoelectric cells is :

Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :

On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are :

An alkaline earth metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is :

Among the sulphates of alkaline earth metals, the solubilities of BeSO4 and MgSO4 in water, respectively, are :

Match the following compounds (Column-I) with their uses (Column-II) : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} S.No. Column-I S.No. Column-II (I) Ca(OH)2 (A) casts of statues (II) NaCl (B) white wash (III) CaSO4, {1 \over 2}H2O (C) antacid (IV) CaCO3 (D) washing soda preparation

Glycerol is separated in soap industries by :

The IUPAC name of the following compound is :

Which of the following compounds shows geometrical isomerism?

The increasing order of boiling points of the following compounds is :

Among the following compounds, geometrical isomerism is exhibited by :

The IUPAC name of the following compound is :