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Science Class 8th

281. Transfer of characteristics from parent to offspring is called

A. Heredity

B. Transformation

C. Characterization

D. Genetics

Answer
A

282. Which of following form basis of heredity

A. Chromosome 

B. Gene

C. DNA

D. All

Answer
D

283. Sibling resemble

A. Parents

B. One another

C. Any from above is possible

D. A and B

Answer
D

284. Characteristics which pass from one generation to another is called

A. Inheritable

B. Heretible

C. None heretible

D. None

Answer
A

285. Characters which can,t transfer from generation to generation

A. Interetible

B. Heretible

C. Non inheritable

D. All

Answer
C

286. Eye color is

A. Inheretible

B. Heretible

C. None heretible

D. None

Answer
A

287. Color of eye is controlled by

A. Single gene

B. Pair of gene

C. Single DNA

D. One chromosomes

Answer
B

288. Production of brown pigment in iris of eye is controlled by

A. Genes

B. Food

C. Energy

D. None

Answer
A

289. If gene work and produce more pigment in eye

A. Black color

B. Brown color

C. Red color

D. Any one is possible

Answer
A

290. Production of less pigment in eye then its color would be

A. Light brown

B. Dark brow

C. Black

D. None

Answer
A

291. Color of eye is different due to

A. Environment 

B. color of pigment

C. Amount of pigment

D. All

Answer
C

292. Attached and detached earlobe is

A. Heretible

B. Inheretible

C. Non heretible

D. None

Answer
B

293. Heat is transferred from one body to another due to _____ in temperature

A) Low

B) High

C) Difference

D) Same

Answer
C

294. _____ is the main source of heat. A

A) Moon

B) Heat

C) Water

D) Sun

Answer
D

295. In ancient time the method used for heat production was _____

A) Sunlight

B) Friction

C) Water

D) Fire

Answer
B

296. The ____ is the SI system unit for measuring heat.

A) Newton

B) Joule

C) Calories

D) None the above

Answer
A

297. 1 calories = ______ joules.

A) 7.81

B) 6.81

C) 4.81

D) 5.81

Answer
C

298. Solid, liquids and gases are expand on heating, the process is called _____ expansion

A) Convection

B) Heat

C) Thermal

D) Cool

Answer
C

299. Molecule are in _____ motion in solids, liquids and gases.

A) Random

B) Constant

C) General

D) None of the above

Answer
B

300. When the solids, liquids and gases heated, the movement of the molecules _____

A) Decreases

B) Increases

C) Stop

D) None of the above

Answer
B
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