Which converts electrical energy into mechanical energy ?

Sl.No.	Question	Answer
1	ఎలక్ట్రిక్ ఎనర్జీ ని మెకానికల్ ఎనర్జీ గా మార్చేది ఏది ? ఎ) ఎలక్ట్రిక్ మోటార్ బి ) టార్చ్ లైట్ సి ) ట్యూబ్ లైట్ డి )  ఎలక్ట్రిక్ బల్బ్	జవాబు : ఎ
2	న్యూక్లియర్ ఫ్యూషన్ లో వాడె ఇంధనం ఏది ? ఎ) హైడ్రోజన్ బి ) బొగ్గు సి ) కట్టెలు డి ) సహజ వాయువు	జవాబు : ఎ
3	ఆరు బయట ఉంచిన రాగి పాత్రలు గ్రీన్ కలర్ లోకి మారతాయి ? ఎందువల్ల ఎ) రాగి పాత్ర పై కాపర్ కార్బోనేట్ ఏర్పటం వల్ల బి ) సూర్య రశ్మి వల్ల సి ) నీళ్ళు తగలటం వల్ల  డి ) ఇవేవి కావు	జవాబు : ఎ
4	రైలు పట్టాలను అతికించటం అనే థెర్మిట్ ప్రాసెస్ లో ఏ పౌడర్ వాడతారు ? ఎ) అల్యూమినియం బి ) కాపర్ సి ) సిల్వర్ డి ) అయోడిన్	జవాబు : ఎ
5	కోక్ అనే బొగ్గు లో ఉండేది ఏది ? ఎ) కార్బన్ బి ) పొటాసియం సి ) నికెల్ డి ) ఇవేవి కావు	జవాబు : ఎ
6	సిన్నబార్ అనే పేరు దేనికి ఉంది ? ఎ) పాదరసం ( మెర్క్యూరీ ) బి ) జింక్ సి ) కాల్షియమ్ డి ) సల్ఫర్	జవాబు : ఎ

OBJECTIVE TYPE QUESTIONS FOR Civil Services (Prelims) EXAMINATION, 2024

General  Studies Paper

UPSC

BIOLOGY QUESTIONS – 1

1) Sigmoid growth curve shows which of the following ?

a) It shows the geometric growth  It is a S shaped curve on graph

(b) Arithmetic growth

(c) Population growth

(d) Industrial growth

Ans : a

2)Which of the following are the main groups of Plant Growth Rate ?

a) Auxins

b) Gibberellins

c) Cytokinins

d) All the above

Ans : d

4) Auxins promote which of the following in the plants ?

a) Flowering

b) Respiration

c) Oxidation

d) None of these

Ans : a

5) Auxin was first isolated from which of the following ?

a) Human urine

b) Soils

c) Mountains

d) Rivers

Ans : a

6) What is Photoperiodism ?

a)Flowering in certain plants depends on a combination of light and dark exposures and also on the relative duration of light and dark periods. This response of plants is called photoperiodism

b) Taking photos

c) Printing of photos

d) None of these

Ans : a

7) which of the following induces immediate stomatal closure in leaves ?

a) Abscisic Acid

b) Auxins

c) Carbon dioxide

d) None of these

Ans : a

8) Sugar is the most common substrate of fermentation. Which of the following are the common fermentation products?

a) Ethanol,

b)lactic acid

c) hydrogen

d) All the above

9) Through which of the following places in plants, exchange of gases take place ?

a) Lenticels and Stomata in leaves, which serve as openings

b) dried wood

c) dried leaves

d) None of these

Ans : a

10) What are the causes of cancer ?

a) Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.

b) The chemical carcinogens present

in tobacco smoke have been identified as a major cause of lung cancer

c) Cancer causing viruses called oncogenic viruses have genes called viral

oncogenes.

d) All the above

Ans : d

11) Prokaryotic cells are represented by which of the following ?

a) Bacteria

b) Blue-green algae

c) Mycoplasma and Pleuro Pneumonia Like Organisms ( PPLO)

d) All the above

Ans : d

12)What is the speciality of the prokaryotic cells ?

a) They are generally smaller and multiply more rapidly than the eukaryotic cells

b) They are bigger in size

c) They can easily change the shape

d) None of these

Ans : a

13) What are the four basic shapes of bacteria ?

a)Bacillus (rod like)

b) Coccus (spherical)

c) Vibrio (Comma shape) and Spirillum (spiral)

d) All the above

Ans : d

14)Chewing is an example of which type of Digestion ?

a)Mechanical digestion

b)Chemical digestion

c)Thorough digestion

d) None of these

Ans : a

15)Which of the following is the correct route of digestion ?

a) Mouth – Pharynx – Esophagus – Stomach – Small intestine – Large intestine – Anus

b) Moutn – Esophagus – Pharynx – Small intestine – stomach – Anus

c) Mouth – Small intestine – Stomach – Pharynx – anus

d) None of these

Ans : a

16)Where the digestion is completed  and the final products of digestion such as glucose, fructose, fatty acids, glycerol and amino acids are absorbed through the mucosa into the blood stream and lymph ?

a)Small intestines

b) Esophagus

c) Mouth

d) None of these

Ans : a

17) Increased blood pressure may be caused by excess section of _______

a) thyroxin

b)testosterone

c)estradiol

d)adrenalin

Ans : d

18)Insulin has 51 amino acids in two polypeptide chains which are linked by

a) one sulphide bond

b) one disulphide bond

c)two disulphide bonds

d) three disulphide bonds

Ans :c

19) Which one of the following vitamins contains a metal atom ?

a) Riboflavin

b) Vitamin B12

c) Vitamin A

d) Vitamin B6

Ans : b

20) Kwashiorkor is caused by the deficiency of

a) vitamins

b) harmones

c) amino acids

d) essential amino acids

21) Protein which acts as a hormone is

a) casein

b)oxytocin

c)trypsin

d) keratin

Ans : b

22) Which of the following hormones contains iodine ?

a) Adrenalin

b)Testosterone

c) Thyroxine

d) Insulin

Ans : c

23) Which of the following is derived from sugar cane ?

a) Sucrose

b) Maltose

c) Lactose

d) Cellulose

Ans : a

24) Which of the following nutrients are increased on sprouting the pulses such as sprouted black gram or Bengal gram ?

a) Vitamin A

b) Vitamin B

c) Vitamin C

d) Iron

Ans : d

25) The metal ion present in the human body in greater percentage is

a) Calcium

b) Sodium

c) Iron

d) Potassium

Ans : a