An aldehyde on treatment with yields:

In the figure if TP and TQ are the two tangents to a circle with centre O so that ÐPOQ = 110º, then ÐPTQ is equal to

Hence ∠PTQ = 70°

the straight lines x and passes through the point

Ether fire can be extinguished by:

In the figure, , AC = BC, OA = 12 cm and OC = 6.5 cm. Find the area of DA.OB.

In the figure, compute the area of quadrilateral ABCD.

Glycerol is oxidised by bismuth nitrate to produce

Diethyl ether may be regarded as anhydride of:

If a line AB makes an angle with OX and is at a distance of units from the origin then the equation of AB is

Ethylene glycol gives oxalic acid on oxidation with

Two thermometers A and B are exposed in sun light. The valve of A is pointed black, but that of B is not pointed. The correct statement regarding this case is

Two conducting rods and of same length and cross-sectional area are connected (i) In series (ii) In parallel as shown. In both combination a temperature difference of is maintained. If thermal conductivity of is and that of is then the ratio of heat current flowing in parallel combination to that flowing in series combination is

When glycerol is treated with excess of  it produces:

Ethyl ester The product  will be

Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved

By which of the following procedures can ethyl -propyl ether be obtained?