Chemistry mcqs

Geometry of molecule will be pyramidal if the outer post shell of the central atom has----------?

Generally the limit of visible spectrum is-----?

General formula of alkyne is-------?

Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?

Free neutron changes into proton with the emission of---------?

Formula of haloform is---------?

Formula of Galena is----?

Formula of Chile saltpetre is---------?

Formation of vapours from the surface of a liquid is called--------?

Formalin is ------ solution of formaldehyde in water?

Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is--------?

Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield--------?

Formaldehyde and lactose are combined to produce throat lozenges named as---------?

Force responsible to hold atoms together in a compound is called --------?

For which system does the equilibrium constant Kc has unit of (concentration)-1---------?

For which of the following compounds the term empirical formula cannot be applied ?

For which mechanisms the first step involved is the same ?

For the reaction 2HI ------> H2+ I2

For the measurement of standard electrode potential Zn is dipped in--------?

For the generation of biogas, the materials commonly used are-----?

For industrial preparation of CH3CHO catalytic promoter is---------?

For determining the order of reaction we use---------?

For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp.

For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as----------?

For a given mass of a gas at constant temperature, if the value V becomes 3 times, the pressure will becomes-----?