Q. Baking soda is -
1) Na2CO3
2) NaHCO3.6H20
3) NaHCO3
4) NaCO3.10H2O
Q. Which of the following may be a possible pH value of an acidic solution?
1) 6
2) 7
3) 8
4) 9
Q. Which of the following will have a higher pH?
1) Lemon Juice
2) Milk
3) Coffee
4) Pure Water
Q. Which one of the following elements cannot be detected by Lassaigne's test?
1) I
2) CI
3) S
4) F
Q. In which of the following func-tional group isomerism is not possible?
1) Alcohols
2) Aldehydes
3) Alkyl halides
4) Cyanides
Q. The monomer/monomers used for the synthesis of Nylon 6 is/ are -
1) hexamethylenediamine and adipic acid
2) caprolactam
3) urea and formaldehyde
4) phenol and formaldehyde
Q. The PCl5 molecule has trigonal bipyramidal structure. Therefore, the hybridization of p orbitals should be -
1) sp2
2) sp3
3) dsp2
4) dsp3
Q. Number if lone pairs of electrons present in XeF2 molecule is -
1) 5
2) 4
3) 6
4) 3
Q. The paste of a white material in water is used to maintain a fractured bone fixed in place. The white material used is called -
1) bleaching powder
2) plaster of paris
3) powder of zinc oxide
4) lime powder
Q. What are the main constituents of biogas?
1) Methane and sulphur dioxide
2) Methane and carbon dioxide
3) Methane, hydrogen and nitric oxide
4) Methane and nitric oxide
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