List of practice Questions

Nitrogen shows maximum covalency of $4$ whereas other heavier elements of the group show higher covalency because,
Nicol prism is made up of
Monomers of nylon 2-nylon 6 ar
Monovalent sodium and potassium ions, divalent magnesium and calcium ions are found in
Molality of $2.5\, g$ of ethanoic acid $ (CH_{3}COOH) $ in $75\, g$ of benzene is
Match the sub-stage of prophase I of meiosis in Column 1 and the events in Column II and choose the right option.
Match column I with column II and select the correct option from the given codes.
Maltose is made of the units
Male gametophyte with least number of cells is present in
Leptocentric (amphivasal) vascular bundles are characteristically found in
Largest flower in the plant kingdom is found in
$KMnO_4$ in alkaline medium changes to
In presence of acidic medium, $KMnO_4$ converts $H_2S$ into
In Periplaneta americana the first and second pair of wings arise from
In O molecule, the formal charge on the central O-atom is
In electrorefining of copper some gold is deposited at
In Clemmensen reduction, carbonyl compound is treated with
If the length and area of cross-section of a conductor are doubled, then its resistance will be
How are transformants selected from nontransformants?
'Cladode' is a characteristic morphological feature of
Cell wall of a fungal hyphae is composed of
$C_6H_5OC_2H_5$ reacts with HI to give
Removel of keystone species cause serious disruption in the functioning of the community. Keystone species are low in abundance (or biomass) than the dominant species.
Which of the following compounds shows optical isomerism ?
Which of these is least likely to act as Lewis base?