Chemistry notes&lectures

A short Introduction on metals
For O A lev students.

INTRODUCTION TO DRUGS

Carbohydrates

Q1) Most abundant biomolecule on earth is ?
a) Lipids
b) Fats
c) carbohydrates
d) nucleic acids

Q2) Simplest form of Carbohydrates ?
a) carboxyl group
b) Aldehyde and Ketones
c) Hydrogen group
d ) Hydroxyl group

Q3. Which monosaccharides majority found in human body ?
a) D type
b) L type
c ) LD type
d ) None of above

Q4. Which of the following is smaallest carbohydrates triose ?
a) Ribose
b ) Glucose
c ) Glyceraldehyde
d) Dihydroxyacetone

Q5) which is reducing sugar ?
a) Erythrulose
b) Dihydroxyacetone
c) Glucose
d) All of above

Q6) Digitonin is a ?
a) Lipid
b) Protein
c) glucoside
d) Alkaloid

Q7 Example of Epimer is ?
a) Glucose and Ribose
b) Glucose and Glactose
c) Glactose and mannose
d) Ribose and Mannose

Q8 .General formula of Carbohydrates is ?
a) (CH2O)n
b) (CH2O) 2n
c) (CHO) n
d) (CnH2nO)

Q9.Glycosidic linkage
b/w glucose molecule in maltose is ?
a) Beta 1-4
b) Alpha 1-2
c) Alpha 1-4
d) Beta 1-2

Q10. A keto pentose will have sterioisomers?
a) 4
b) 6
c) 8
d) 10

Q11.Reserve food material of green algae is ?
a ) Laminarin
b) chrysolaminarin
c) Floridian
d) Starch

Q12. Only carbohydrates which is not having chiral carbon atom ?
a) Glyceraldehyde
b) Erythrose
c) Dihydroxyaceton
d) Erythrulose

Q13. Select odd one form of following?
a) Arabinose
b) Xylose
c) Lyxose
d) Erythrose

Q14.A pentose sugar present in heart cells ?
a) Xylose
b) Arabinose
c) Lyxose
d) Xylulose

Q15. Which give positive result with Seliwanoff test?
a) Sucrose
b) Glucose
c) Galactose
d) Mannose

Q16.Which is keto Tetrose ?
a) Erythrulose
b) Xylulose
c) Sorbose
d) Psicose

Q17. Which is alpha lactone ?
a) Vitamin c
b) Vit D
c) Vit A
d ) Vit K

Q18. Sweetner used in sugar less candies ?
a) Ribitol
b) Xylitol
c) Inositol
d) Mannitol

Q19.Minimum No. of carbon required for monosaccharides?
a) 1
b) 2
c) 3
d) 4

Q20. Iodine give red colour with ?
a) Starch
b) Glycogen
c ) Insulin
d) Dextrin

Q21. A carbohydrate found in milk is?
a) Glucose
b) Glactose
c ) Lactose
d) Maltose

Q22.Iodine gives no colour with ?
a) Cellulose
b) Starch
c) Dextrin
d) Glycogen

Q23.Glucose on Fehling test gives?
a) No reaction
b) Silver mirror
c ) Red ppt
d) Pungent gas

Q24. Fructose commonly known as ?
a) Dextrose
b) Levulose
c) Pyranose
d) Furanose

Q25.Starch is in plants and ___ is in animals?
a) Starch
b) Glycose
c) Cellulose
d) Glycogen

Q26.1 gram of carbohydrates provide energy?
a) 4 kcal
b) 3 kcal
c) 1.4 kcal
d) 2 kcal

Answer key of Quiz Carbohydrates
Ans 1. Carbohydrates
Ans 2 Aldehyde and Ketones
A 3 D type
A 4 Glyceraldehyde
A 5 All of above
A 6 Glycoside
A7 Glucose and Glactose
A 8 (CH2O)n
A 9 Alpha 1-4
A 10 4
A 11 Starch
A 12 Dihydroxyacetone
A 13 Erythrose
A 14 Lyxose
A 15 Sucrose
A 16 Erythrulose
A 17 Vit C
A 18 Xylitol
A 19 3
A 20 Glycogen
A 21 Lactose
A 22 Cellulose
A 23 Red ppt
A 24 Laevulose
A 25 Glycogen
A 26 4 Kcal .

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