PPSC Chemistry Part II Organic Chemistry Online Test With Answers

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PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 a-terpioneol is obtained on hydration of which of the following with dilute H2SO4. Citral Myrcene Linalool Limonene
2 Citral when heated with KHSO4 forms. Isoprene p-cymene p-menthane Dipentene
3 The terpenoid present in oil of lemon grass is Citral Geranial Nerol a- terpineol
4 Which of the following is not a characteristics of terpenoids. They are pleasant smelling liquids They are steam volatile They are nitrogenous bases they are insoluble in water
5 Enfleurage process is used to extract the essential oils from Back of plant Seeds of plant Leaves of plant Flowers of plant
6 The terpenoid responsible fo the smell Camphor Genenial Citral Carvone
7 Identify an oxygenated cyclic terpenoid a- pinene Camphor Citral Geranial
8 An example of acrylic monoterpenoid is Dipentene Myocene a- terpineol Limonene
9 Ingold's isoprence rule states that in terpenoids isopren units are joined. Head to tail Head to head Tail to tail In a random order
10 Organic substance responsible for the smell of the Flowers etc are grouped together in chemistry as. Perfumes Terphenoids Flavonoids Alkaloids
11 Biogical role of nucleic acid doe snot include Genetic continuity Protein syathesis Hybridization Mutation
12 The binding site on ribosome t-RNA and m-RNA is provided by Polysome Ribosomal RNA Codone DNA
13 One arm of each t-RNA terminates in the base sequence. UGU GGC ACT CCA
14 Codon for amino acid glycinc is not represented by base pair GCA GGC GGA GGU
15 Hydrogen bons holding the strand to nucleic acids are formed between Sugar and base units Base unit Sugar ane phosphate units Sugar units
16 The process of transfer of genetic message from DNA to m-RNA is known as Refplication Translation Transcription Transference
17 The formation of daughter DNA's from parent DNA is called. Transalation Transcription Reproduction Replication
18 The number of hydrogen bond present in G -C pair is 1 2 4 3
19 RNA is involved int eh synthesis of Protein Nucleic acid Carbohydrates Fats
20 The number of hydrogen bonds boding A _____ T pair is 1 2 3 4
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