A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Bagasse, a by-product of sugar manufacturing industry, is used for the production of :
A. nylon
B. glass
C. paper
D. alcohol
2. The reagent used in Clemmenson's reduction is
A. Zn-Hg / con. HCl
B. aq. K0H
C. Con H2SO4
D. al KOH
3. The chemical name of anisole is
A. Methoxy benzene
B. Acetone
C. Propanone
D. Ethanoic acid
4. The isotope of uranium capable of sustaining chain reactions is :
A. U-235
B. U-238
C. U-239
D. none of these
5. The normality of 30 volume H2O2 is
A. 6.685 N
B. 2.678 N
C. 8.034 N
D. 5.336 N
6. Natural rubber is a polymer of
A. ethylene
B. vinyl chloride
C. isoprene
D. styrene
7. One which is NOT an exception is
A. Mg and Al
B. N and O
C. Na and Mg
D. Be and B
8. Number of isomeric forms (constitutional and sterioisomers) for [Rh(en)2(NO2)(SCN)]+ are
A. Six
B. Twelve
C. Three
D. Nine
9. 2SO2(g) + O2(g) is an example for
A. heterogenous catalysis
B. homogenous catalysis
C. irreversible reaction
D. neutralisation reaction
10. The human body contains the maximum amount of
A. protein
B. water
C. fats
D. plasma
11. 06 mole of KNO3 solid is added to 100 cm3 of water at 298 k. The enthalpy of KNO3aq solution is 35.8 kJmol-1. After the solute is dissolved the temperature of the solution will be
A. 304 k
B. 298 k
C. 293 k
D. 301 k
12. Which one of the following is wrongly matched?
A. [Cu (NH3 )4]+2 - square planar
B. [Co (en )3 ]+3 - follows EAN rule
C. [Fe (CN )6]-3 - sp3d2
D. [Ni(CO)4] - neutral ligand
13. Its electonic configuration will be
A. 1s22s22p63s23p3
B. 1s22s22p3
C. 1s22s22p63s23p2
D. 1s22s22p4
14. The hottest part of the gas flame is known as the
A. luminous zone
B. dark zone
C. blue zone
D. non-luminous zone
15. The reagent used to convert an alkyne to alkene is
A. Zn - Hg / HCl
B. Zn / HCl
C. Sn / HCl
D. Pd / H2
16. Among the following, the compound that contains ionic, covalent and coordinate linkage is
A. CaO
B. NaCl
C. NH3
D. NH4Cl
17. Radioactive disintegration of uranium ultimately results in formation of :
A. radium
B. thorium
C. polonium
D. lead
18. Reaction of methyl bromide with aqueous sodium hydroxide involves
A. racemisation
B. inversion of configuration
C. SN 1 mechanism
D. SN2 mechanism
19. The brown ring test for nitrates depends on
A. oxidation of nitric oxide to nitrogen dioxide
B. reduction of ferrous sulphate to iron
C. oxidising action of sulphuric acid
D. the reduction of nitrate to nitric oxide
20. At equilibrium, it was found that 60% of SO2 is used up. lf the partial pressure of the equilibrium mixture is one atmosphere. the partial pressure of O2 is
A. 0.41 atm
B. 0.21 atm
C. 0.52 atm
D. 0.82 atm
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc