Chemistry Test ...

How many moles of P₄O₆ and P₄O₁₀ will be produced by the combustion of 12.4 gm of phosphorus in 12.8 gm of O₂, leaving no P₄ or O₂ ? [Atomic wt. P = 31]

280 g of a mixture containing CH₄ and C₂H₆ in 5 : 2 molar ratio is burnt in presence of excess of oxygen. Calculate total moles of CO₂ produced.

(Express your answer as a sum of all digits)

Correct IUPAC name of compound  :-

Which one of the following will not give positive Test of unsaturation with Br₂/CCl₄

Radiational wave length (λ) = 124 nm falls on a metallic surface. Then the kinetic energy of the ejected photo electron(s) can be : (Given that threshold wavelength (λ₀) = 248 nm)

The I.P. of an atom is 36 eV. Which value does not corresponding to second excitation potential :

Which of the following is / are INCORRECT IUPAC names

The correct parent chain of carbon is/are

Infrared lamps are used in restaurant to kept the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. An infrared lamp used in a restaurant emits monochromatic light of wavelength 1240 nm.

If the power of lamp is 100 W, then the number of photons emitted per sec is –

Infrared lamps are used in restaurant to kept the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. An infrared lamp used in a restaurant emits monochromatic light of wavelength 1240 nm.

If the radiations of the same lamp are falling on a metal surface (work function = 2eV) and the quantum yield is 0.2. The number of ejected electron from the surface in 1 minute is –