Science QA Group1 2011 Chemistry

8306.The deficiency of Molybdenum, a trace element present in the soil, causes

Red rot of sugarcane

Whiptail disease of Cauliflower

White rust disease of Anaranthus

Black rust disease of wheat

8332.Whisky and Brandy contain

80-90% ethyl alcohol

25.30% ethyl alcohol

40-50% ethyl alcohol

4-12% ethyl alcohol.

8376.During electrolysis of molten calcium hydride

calcium is deposited at anode

hydrogen is liberated at anode

hydrogen is liberated at cathode

hydrogen and oxygen are liberated at cathode and anode respectively

8424.Ammonia burnt with $O_2$, liberate which of the following ions/radicals

$NH_{4}^+$ + $OH^{-} $

$N_{2}+H_{2}O$

$NO_{2}+H_{2}O$

$N_{2}+H_{2}$

8492.How many electrons can be accommodated in d-orbital

3

6

10

8

8564.The toxic carcinogenic metal ion in the following is

$Cr^{o}$

$Cr^{3+}$

$Cr^{2+}$

$Cr^{6+}$

8656.Which of the following is a natural polymer ?

Cellulose

Polystyrene

Polyethylene

Nylon

8658.The ground state energy of the electron in the hydrogen atom is 13-6 eV. The energy of the state n = 2 is

13.6 eV

6.8 eV

4.5 eV

3.4 eV

Score Board