CBSE Class 10 Science Multiple Choice Questions(MCQs) & Answers

CBSE Class 10 Science Multiple Choice Questions(MCQs) & Answers CBSE Class 10 Science QUESTIONS

CBSE Class 10 Science Multiple Choice Questions(MCQs) & Answers

21 The process of the division of cell into several cells during reproduction in Plasmodium is termed as:
A Multiple fission
B Binary fission
C Fragmentation
D Budding

Answer: Multiple fission
22 Which of the following pair of organ is not homologous?
A Wings in butterfly and bat
B Forelimbs in lizard and frog
C Forelimbs in humans and lizard
D None of these

Answer: Wings in butterfly and bat
23 The organs present in two organisms indicate that they are derived from the same ancestor are:
A Homologous Organs
B Sense organs
C Analogous Organs
D Respiratory Organs

Answer: Homologous Organs
24 What is the ancient name for all human beings?
A Homo sapiens
B Invertebrates
C Monkey
D Chimpanzee

Answer: Homo sapiens
25 What could be the reason for the fossil of an organism to be found in the deeper layers of the earth?
A The extinction of organism has occurred thousands of years ago
B Time of extinction cannot be determined.
C The extinction of organism has occurred few years back
D The position of fossil in the layers of earth is not related to its time of extinction

Answer: The extinction of organism has occurred thousands of years ago
26 Which is the one characteristic of the parents that can be inherited by their children?
A Snub nose
B Cut nose
C Deep scar on chin
D Technique of swimming

Answer: Snub nose
27 Which of the following determines the sex of a child?
A The presence of a Y chromosome in a sperm
B The presence of an X chromosome in an ovum
C The length of the mother’s pregnancy
D The length of time between ovulation and copulation

Answer: The presence of a Y chromosome in a sperm
28 A cross between a tall plant (TT) and short plant (tt) resulted in progeny that were all tall plants as:
A Tallness is the recessive trait
B Tallness is the dominant trait
C Shortness is the dominant trait
D Height of plant is not governed by gene t or t

Answer: Tallness is the dominant trait
29 Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
A 35 cm
B 20 cm
C 10 cm
D 30 cm

Answer: 10 cm
30 An object is placed at 100 mm in front of a concave mirror which produces an upright image (erect image). The radius of curvature of the mirror is:
A More than 200 mm
B Exactly 200 mm
C Less than 100 mm
D Between 100 mm and 200 mm

Answer: More than 200 mm

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