The general formula of alkanones is

A. RCHO

B. RCOR'

C. RCOOH

D. RCOOR

The constituent common to duralumin and alnico is

A. Co

B. Mn

C. Al

D. Mg

The shape of the S-orbital is

A. elliptical

B. spiral

C. circular

D. spherical

Aluminium hydroxide is used in the dyeing industry as a

A. dye

B. dispersant

C. salt

D. mordant

The tincture of iodine means iodine dissolved in

A. ethanol

B. bromine chloride

C. chlorine water

D. water

Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of

A. CaCO₃

B. Na₂CO₃

C. Na₂SO₄

D. CaSO₄

The acid anhydride that will produce weak acid in water is

A. SO₃

B. NO₂

C. SO₂

D. CO₂

The process that occurs when two equivalent forms of a compound are in equilibrium is

A. Isotopy

B. Resonance

C. Isomerism

D. Reforming

In the laboratory preparation of ethyl ethanoate, the water present in the mixture is removed using ?

A. Anhydrous CaCl₂

B. concentrated NaCO₄

C. dilute NaOH

D. concentrated H₂SO₄

The constituent of air necessary in the rusting process are

A. O₂ and H₂O

B. Ar and CO₂

C. CO₂ and H₂O

D. O₂ and CO₂