Explore topic-wise MCQs in Science.

This section includes 73 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.

51.

How many times does the silkworm shed its skin before forming a cocoon?

A. Three times
B. Ten times
C. Burrs
D. Fifteen times
Answer» D. Fifteen times
52.

For how long do the caterpillars eat mulberry leaves?

A. 10 to 15 days    
B. 20 to 30 days
C. Stem  
D. 5 to 10 days
Answer» D. 5 to 10 days
53.

Which of the following country is the largest producer of silk?

A. India   
B. Italy
C. Cocoon    
D. China
Answer» E.
54.

DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Scouring is the process of washing sheared fleece in hot water, detergent and alkali in tank Reason (R): Scouring removes dirt, grass and grease.

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. (iii) and (iv) 
D. A is false but R is true.
Answer» B. Both A and R are true but R is not the correct explanation of A.
55.

Which one is not a variety of silk?

A. Muga    
B. Tussar
C. S is obtained from salivary gland of source organism.
D. None of these
Answer» D. None of these
56.

DIRECTIONS: Read the passage (s) given be low and answer the questions that follow. Passage - 2 The process of making yam from fibres is called spinning. In spinning, fibre from a mass of cotton or wool are drawn out and twisted. This brings the fibres together to form a yam. Spinning process used to make yam from fibres involves which of the following steps?

A. Drawing out fibres from amass of cotton wool
B.  Twisting of fibres
C.  Fabric  
D.  None of the above
Answer» D.  None of the above
57.

DIRECTIONS: Read the passage given below and answer the questions that follow. Passage To improve the quality and production of wool, of our indigenous sheep, cross-breeding programme has been undertaken at a number of research centers in our country. During such trials, indigenous and exotic breeds of sheep are made to cross-breed for the production of superior wool quality and mutton. A superior quality sheep with desirable characteristics will be formed eventually after continuous selection and breeding programmes. Which of the following characteristic of the parents is chosen for selective breeding?

A. Wool type
B. Resistance to disease
C. Bakharmal  
D. All of these
Answer» E.
58.

DIRECTIONS: Read the passage given below and answer the questions that follow. Passage To improve the quality and production of wool, of our indigenous sheep, cross-breeding programme has been undertaken at a number of research centers in our country. During such trials, indigenous and exotic breeds of sheep are made to cross-breed for the production of superior wool quality and mutton. A superior quality sheep with desirable characteristics will be formed eventually after continuous selection and breeding programmes. What is the name of the process of selecting parents for obtaining a desirable baby sheep?

A. Rearing 
B. Scouring
C. Growing mulberry trees.
D. Sericulture
Answer» D. Sericulture
59.

Which of the following device is used for weaving?

A. Charkha
B.   Gin
C. P could be wool, Q could be jute, R could be sisal and S could be cotton.
D.  Hand spindle
Answer» D.  Hand spindle
60.

Which of the following animal provide wool?

A. Llama 
B.  Cow
C.  Llama and Alpaca
D.  both (a) and (c)
Answer» E.
61.

Which of the following is not a variety of silk?

A. Muga    
B. Eri
C. Fish    
D. Merino
Answer» E.
62.

The process of selecting parent sheep for obtaining desirable baby sheep is called

A. Shearing   
B. Selective breeding
C. X is used in weaving while Y is used in knitting.
D. Sericulture
Answer» C. X is used in weaving while Y is used in knitting.
63.

Which of the following is the first wholly synthetic fibre?

A. Rayon 
B.   Nylon
C. Wool  
D.   Teflon
Answer» C. Wool  
64.

Which process is used to kill the insect inside the cocoon?

A. Boiling in water
B. drying in oven
C.  Seed
D. Both (a) and (b)
Answer» E.
65.

When does a jute plant normally harvested?

A. When the plant has not yet developed a stem
B.  When the plant is at stem developing stage
C. Spinning  
D.  None of the above
Answer» D.  None of the above
66.

Which of the following processes are used for making fabric from yam?

A. Weaving
B.  Knitting
C. Yak
D. None of these
Answer» D. None of these
67.

Sorter's disease is associated with-

A. Cotton industry   
B. Silk industry
C. Silk
D. Both (a) and (b)
Answer» D. Both (a) and (b)
68.

DIRECTIONS (Q. 48 - 50): Look at the given figure andanswer the given questions:  What 'A' is representing in the given figure?

A. Weft
B.   Warp
C.  looms 
D.   Yam
Answer» B.   Warp
69.

Which breed of goat is used for making pashmina shawls?

A. Cashmere goat   
B. Angora goat
C.  II\[\to \]I\[\to \]III   
D. None of these
Answer» D. None of these
70.

The workers of silk industry face risks of disease related to

A. skin   
B. lungs
C. \[A\to (q);B\to (s);C\to (p);D\to (r)\]
D. both (a) and (b)
Answer» E.
71.

Which one is thinner?

A. Fabric
B.   Yam
C. A is true but R is false.
D.  All are of same size
Answer» B.   Yam
72.

Direction: Fill in the blanks in the passage given below We should take good ________ (33) ________ of our clothes. They should be ________ (34) ________ well with good quality ________ (35) ________ to remove dust and sweat. After the clothes are washed, they should be ________ (36) ________ in the sun clothes should be ________ (37) _____ after drying. Ironed clothes look ________ (38) ________ and also helps to ________ (39) ________ gems. ________ (40) ________ clothes should be dry-cleaned. Woollen and silk clothes should be stored with ________ (41) ________. This protects the clothes from ________ (42) ________. 

A. grow
B. kill
C. store
D. retain
Answer» C. store
73.

 ___________ protects us from rain.  

A. Cotton clothes
B. Synthetic clothes
C. Woollen clothes
D. Rain coat
Answer» E.