Acetaldehyde and benzaldehyde can be differentiated by:

1. Fehling test

2. Iodoform test

3. Tollen's reagent

4. Both (1) and (2)

When vapours of acetic acid are passed over.....at $300°\mathrm{C}$ we get acetone.

1. ${\mathrm{Al}}_2{\mathrm{O}}_3$

2. $\mathrm{CuO}$

3. $\mathrm{MoO}$

4. $\mathrm{Cu}$

Formaldehyde is not used in:

(1) adhesives                 

(2) bakelite

(3) tooth powders           

(4) explosives

Ketones can be prepared by:

(1) Rosenmund's reduction

(2) Stephen's reduction

(3) both (1) and (2)

(4) none of the above

Cyclohexanone is subjected to reduction by ${\mathrm{NaBH}}_4$. The product formed is:

(1) cyclohexane             

(2) cyclohexanal

(3) cyclohexadiene         

(4) Cyclohexanol

Schiff's reagent is:

1. Magenta solution decolorized with sulphurous acid

2. Magenta solution decolorized with chlorine

3. Ammoinacal cobalt chloride solution

4. Ammoinacal manganese sulphate solution

Which of the following reaction is a condensation reaction?

(1) HCHO$\to$Para-formaldehyde

(2) ${\mathrm{CH}}_3\mathrm{CHO}\to$Paraldehyde

(3) ${\mathrm{CH}}_3{\mathrm{COCH}}_3\to$Mesityl oxide

(4) ${\mathrm{CH}}_2={\mathrm{CH}}_2\to$Polyethylene

Which of the following is correct for carbonyl compounds?

(1)              

(2) 

(3)                

(4) 

$CHO$
$|$
$CH\mathrm{O\; +\; conc\; NaOH\; - }$X ,  the product X is:

(1) ${\mathrm{CH}}_3\mathrm{OH}+{\mathrm{CH}}_3\mathrm{OH}$         

(2) ${\mathrm{CH}}_2\mathrm{OH}-{\mathrm{COO}}^{-}$

(3) ${\mathrm{CH}}_3\mathrm{OH}$+HCOOH         

(4) $\mathrm{OOC}-{\mathrm{COO}}^{-}$

Compound having molecular formula ${\mathrm{C}}_3{\mathrm{H}}_6\mathrm{O}$ may be:

(1) cyclic ether

(2) carbonyl compound

(3) unsaturatd ether or unsaturatd alcohol

(4) all of the above