Chemistry Class 10th

261. Fat and Oil have different chemical structures:

A) True

B) False

262. Fats are:

A) Triglycerides

B) Glycerol Ester

C) Both A and B

D)  None of the above

263. Oils are:

A) Triglycerides

B) Glycerol Ester

C) Both A and B

D)  None of the above

264. Milk is a rich source of:

A) Animal Fat

B) Plant Fat

C) Lipids

D) None of the above

265. Lipids are soluble in below except:

A) Vit A

B) Vit B

C) Vit D

D) Vit E

266. Lipids provide ______ energy:

A) 4kcal/g

B) 9kcal/g

C) 3kcal/g

D) 15kcal/g

267. Nucleic Acid were first discovered in Nuclei of _________.

A) Protoplasm



D) Nerve Cells

268. Nucleic Acids were discovered by:

A) Fisher

B) Miescher

C) Avagadro

D) Fleming

269. There are ______ types of Nucleic acids:

A) 1

B)  2

C) 3

D) 5

270. The Monomers of Nucleic acids are called as:

A) Nucleolus

B) Nucleoplasm

C) Nucleotides

D) Spindle fibers

271. Nucleotides are composed of _____ Parts:

A) 1

B) 3

C) 5

D) None

272. Nucleotides have a ____ carbon sugar.

A) 2

B) 4

C) 5

D) 6

273. There are _____ nitrogenous organic bases:

A) 2

B) 3

C) 4

D) 5

274. DNA was discovered by:

A) Fleming

B) J Watson

C) F Crick

D) Both B and C

275. The two strands around the DNA are called:

A) Spindle Fiber

B) Double helix

C) Double strands

D) None of the above

276. The Backbone of the DNA is made by:

A) 5 Carbon Sugar

B) Phosphate Group

C) Nitrogenous base

D) Both A and B

277. The DNA has ability to _____ genetic information.

A) Reproduce

B) Store

C) Transmit

D) All of the above

278. Mutation is sudden change in

A) Nerves impulses



D) Protein Synthesis

279. Vitamins are organic compounds that cannot be produced by the body:

A) True

B) False

280. There are _____ types of Vitamins

A) Two

B) Three

C) Four

D) Six