The blood glucose level is commonly expressed as
- (a)mm of Hg
- (b)milligram per decilitre
- (c)parts per million
- (d)grams per litre
Show answerHide answer
Official answer(b) milligram per decilitre
Science & Technology
923 questions asked in UPSC Prelims.
Phytotron is a facility to
- (a)grow plants under disease-free conditions
- (b)conserve endangered species of plants
- (c)grow plants under controlled conditions
- (d)induce mutations
Show answerHide answer
Official answer(c) grow plants under controlled conditions
Match List I (Endocrine glands) with List II (Hormones secreted) and select the correct answer using the codes given below the Lists: List I I. Gonads II. Pituitary III. Pancreas IV. Adrenal List II A) Insulin B) Progesterone C) Growth hormones D) Cortisone Codes:
- (a)I-C, II-B, III-D, IV-A
- (b)I-B, II-C, III-D, IV-A
- (c)I-B, II-C, III-A, IV-D
- (d)I-C, II-B, III-A, IV-D
Show answerHide answer
Official answer(c) I-B, II-C, III-A, IV-D
Insect resistant cotton plants have been genetically engineered by inserting a gene from a/an
- (a)virus
- (b)bacterium
- (c)insect
- (d)plant
Show answerHide answer
Official answer(b) bacterium
Hybridoma technology is a new biotechnological approach for commercial production of
- (a)monoclonal antibodies
- (b)interferon
- (c)antibodies
- (d)alcohol
Show answerHide answer
Official answer(a) monoclonal antibodies
The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by
- (a)a decrease in the supply of oxygen
- (b)minor wear and tear of muscle fibres
- (c)the depletion of glucose
- (d)the accumulation of lactic acid
Show answerHide answer
Official answer(d) the accumulation of lactic acid
Consider the following statements: Hard water is not suitable for I. Drinking. II. Washing clothes with soap. III. Use in boilers. IV. Irrigating crops. Which of these statements are correct?
- (a)I and III
- (b)II and III
- (c)I, II and IV
- (d)I, II, III and IV
Show answerHide answer
Official answer(b) II and III
Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the
- (a)seeds have very high oil content
- (b)oil is rich in unsaturated fatty acids
- (c)oil has long shelf life
- (d)oil has very low Erucic acid content
Show answerHide answer
Official answer(d) oil has very low Erucic acid content
Assertion (A): In human beings, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes.
- (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 a correct explanation of A
- (c)A is true, but R is false
- (d)A is false, but R is true
Show answerHide answer
Official answer(d) A is false, but R is true
Assertion (A): “DNA Finger-printing” has become a powerful tool to establish paternity and identity of criminals in rape and assault cases. Reason (R): Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.
- (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 a correct explanation of A
- (c)A is true, but R is false
- (d)A is false, but R is true
Show answerHide answer
Official answer(a) Both A and R are true, and R is the correct explanation of A
A rectangular water tank measures 15 m × 6 m at top and is 10 m deep. It is full of water. If water is drawn out lowering the level by 1 metre, how much of water has been drawn out?
- (a)45,000 litres
- (b)90,000 litres
- (c)4,500 litres
- (d)900 litres
Show answerHide answer
Official answer(b) 90,000 litres
An accurate clock shows 8 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon?
- (a)150°
- (b)144°
- (c)168°
- (d)180°
Show answerHide answer
Official answer(d) 180°
The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save Rs. 600 per month. What is their total monthly income?
- (a)Rs. 8,400
- (b)Rs. 5,600
- (c)Rs. 4,200
- (d)Rs. 2,800
Show answerHide answer
Official answer(c) Rs. 4,200
If X = –2, then X³ – X² – X – 1 is equal to
- (a)1
- (b)–3
- (c)–11
- (d)–15
Show answerHide answer
Official answer(c) –11
In the given figure, all line segments of the shaded portion are of the same length and at right angles to each other. The same can be cut out of a board of side 10 cm. What is the area of the shaded portion?
- (a)36 cm²
- (b)48 cm²
- (c)52 cm²
- (d)64 cm²
Show answerHide answer
Official answer(c) 52 cm²
Consider the following pictures of a dice: What is the number opposite of 3?
- (a)1
- (b)4
- (c)5
- (d)Data insufficient
Show answerHide answer
Official answer(b) 4
Examine the following relationships among members of a family of six persons A, B, C, D, E and F. I. The number of males equals that of females. II. A and E are sons of F. III. D is the mother of two, one boy and one girl. IV. B is the son of A. V. There is only one married couple in the family at present. Which one of the following inferences can be drawn from the above?
- (a)A, B and C are all females
- (b)A is the husband of D
- (c)E and F are children of D
- (d)D is the grand-daughter of F
Show answerHide answer
Official answer(c) E and F are children of D
The given diagram shows the number of students who failed in an examination comprising papers in English, Hindi and Mathematics. The total number of students who took the test is 500. What is the percentage of students who failed in at least two subjects? The original diagram is not available for this question.
- (a)6.8
- (b)7.8
- (c)34
- (d)39
Show answerHide answer
Official answer(b) 7.8
In a certain code, MARCH is written as OCTEJ. How is RETURN written in that code?
- (a)TFUVSM
- (b)QGSTQM
- (c)TGWTP
- (d)TGRVSO
Show answerHide answer
Official answer(d) TGRVSO
A, B, C, D, E and F, not necessarily in that order, are sitting in six chairs regularly placed around a round table. It is observed that A is between D and F. C is opposite D. D and E are not on neighbouring chairs. Which one of the following must be true?
- (a)A is opposite B
- (b)D is opposite E
- (c)C and B are neighbours
- (d)B and E are neighbours
Show answerHide answer
Official answer(d) B and E are neighbours
In a class there are 18 boys who are over 160 cm tall. If these boys constitute three fourths of the boys and the total number of boys is two third of the number of students in the class, then what is the number of girls in the class?
- (a)6
- (b)12
- (c)18
- (d)24
Show answerHide answer
Official answer(b) 12
A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder?
- (a)Rs. 25.00
- (b)Rs. 37.50
- (c)Rs. 75.00
- (d)Rs. 87.50
Show answerHide answer
Official answer(a) Rs. 25.00
In an examination, every candidate took Physics or Mathematics or both. 65.8% took Physics and 59.2% took Mathematics. The total number of candidates was 2000. How many candidates took both Physics and Mathematics?
- (a)750
- (b)500
- (c)250
- (d)125
Show answerHide answer
Official answer(b) 500
A bag contains 20 balls. 8 balls are green, 7 are white and 5 are red. What is the minimum number of balls that must be picked up from the bag blind-folded (without replacing any of it) to be assured of picking at least one ball of each colour?
- (a)4
- (b)7
- (c)11
- (d)16
Show answerHide answer
Official answer(d) 16
Which one of the following has a greater perimeter than the rest?
- (a)A square with an area of 36 sq. cm
- (b)An equilateral triangle with a side of 9 cm
- (c)A rectangle with 10 cm as length and 40 sq. cm as area
- (d)A circle with a radius of 4 cm
Show answerHide answer
Official answer(c) A rectangle with 10 cm as length and 40 sq. cm as area