Which of following metals can be displaced by all other metals from its solution ?

A. Ag
B. A
C. Au
D. Cu

Which of the elements do not fall in stair case of the modern periodic table__________________?

A. Si
B. As
C. Te
D. None of the above

Across short period the melting and boiling point increase upto __________________?

A. Iiia group
B. Iva group
C. Va group
D. Via group

Which of the following is the formula of chrome red ?

A. Pb3 o4
B. 2pb co3 – pb (oh)2
C. Pb cr o4 – pb (oh)2
D. Pb2o

Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?

A. Quantum structure
B. Secondary structure
C. Tertiary structure
D. Primary structure

In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true ?

A. N2a/v correct for the intermolecular forces.
B. Nb correct for the volume occupied by gas molecules.
C. At high densities the equation reduces to the ideal gas law
D. All of the above statements are correct.

The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?

A. Alkaline aquenous iodine
B. Aqueous bromine
C. Fehling solution
D. Aqueous naoh

When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?

A. Phenol is unsaturated
B. 2-bromophenol is insoluble in water
C. A hydroxy group makes the benzene ring more susceptible to electrophilic attack
D. Acid-base reaction

If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?

A. 0?c
B. 273.16k
C. ?273.16 k
D. ?273.16?c

Benzene is a good solvent for__________________?

A. Fats
B. Resins
C. Iodine
D. All the above