Tamil Nadu Civil Services (TNPSC) Group I Exam 2013- Free Model Test 3- Part 1

 Tamil Nadu Civil Services (TNPSC) Group I Exam 2013- Free Model Test 3- Part 1

1. Who introduced the term “Species” for any kind of living things?

a) Pyramus de Candolle     

b) John Ray   

c) Carolus Linnaeus 

d) Aristotle

Answer:B

2. The leakage of electric charges from the sharp points of a charged conductor is called:

a) Leakage point      

b) Action of points    

c) Sharp point                       

d) Electric point

Answer: B

3. What is the valency of Iron in Ferrous Chloride?

a) 2    

b) 3    

c)1      

d) 0

Answer: A

4.  Select the incorrect statement regarding Euglena.

a) They exhibit the characteristics of both plants and animals.

b) Like animals, they are dependent on an external supply of Vitamin B.

c) Green species of Euglena lose their chloroplasts in darkness and survive saprophytically.

d) None of the above.

Answer: D

5. Which of the following bacterial organism lives in extreme environmental conditions?

a) Rhizobium bacteria         

b) Nitrobacter           

c) Archaebacteria    

d) Monera bacteria.

Answer: C

6. Which of the following substances has the lowest specific heat capacity value?

a) Water                    

b) Lead

c) Copper                  

d) Mercury

Answer: D

7. The cluster of roots that arise from the petiole of leaf is called as:

a) Tap root                

b) Adventitious root

c) Foliar Root            

d) Fibrous Root

Answer: C

8. The Epiphytic roots called Velamen are commonly found in which of the following varieties of plants?

a) Tinospora             

b) Vanda

c) Haustoria              

d) Cuscata

Answer: B

9. The Ring rot disease in Potato occurs due to:

a) Bacteria                

b) Virus                      

c) Fungi                     

d) Protozoa

Answer: A

10. The Tropical disease Kalaazar is caused by which of the following Protozoan species?

a) Leishmania Donovani              

 b) Entamoeba Histolytica

c) Trypanasoma Gambiens   

 d) Leishmania Tropica

Answer: A

11. “Ever Silver” is:

a) Iron electroplated first with Nickel and then with Silver.

b) Iron electroplated with Silver.

c) Aluminium electroplated first with Nickel and then with Silver.

d)Aluminium electroplated with Silver.

Answer: A

12. Sound wave is a:

a) Electromagnetic wave and a transverse wave.

b) Mechanical wave and a longitudinal wave.

c) Transverse wave alone.

d) Electromagnetic wave and a longitudinal wave.

Answer: B

13. During change of state the temperature of the substance

a) Increases              

b) decreases

c) does not change  

d) increases or decreases.

Answer: C

14. The resistance of a conductor current a current 3A with a potential difference 15 V between its two ends is

a) 5 ohm        

b) 45 ohm     

c) 1/5 ohm     

 d) 30 ohm

Answer: A

15. The substance that converts hard water to soft water is

a)sodium carbonate

b) sodium hydrogen carbonate

c) calcium carbonate           

d) magnesium carbonate.

Answer: A

16. Which one of the following bones are not a part of the ear ossicles?

a) Stapes      

b) Ischium      

c) Incus                      

d) None

Answer: B

17. Which of the following species is used to destroy Mosquito Larvae?

a) Gibberella Fusarium       

b) Pseudomonas Putida

c) Bacillus Sphearicus.        

d) Nitrosomonas.

Answer: C

18. In the evolution theories- the “Inheritance of Acquired Characters” is given by:

a) Lamarck               

b) Darwin

c) Oparin                   

d) Urey and Miller

Answer: A

19. Which of the following electromagnetic waves are absorbed by water bodies thereby making satellite pictures of these water bodies appear black in color?

a) X Rays                  

b) Infra Red Rays

c) Gamma Rays                   

d) Micro waves

Answer: B

20. The process of flowering in plants during a period of low temperature is termed as:

a) Short day Periodism       

b) Long day Periodism

c) Photoperiodism   

d) Vernalisation

Answer: A

21. The enzyme named Trypsin – that acts on proteins during food digestion by humans, is present in which of the following organs?

a) Pancreas              

b) Liver          

c) Stomach               

d) Small Intestine

Answer: A

22. The interconnecting link between amphibians and reptiles is:

a) Ichthyostega                     

b) Seymouria

c) Archaeopteryx      

d) Hyracotherium

Answer: B

23. The Anti Diuretic Hormone – Vasopressin is secreted by:

a) Supra renal gland

b) Adrenal gland

c) Vasopressin                     

d) Pancreas

Answer: C

24. The Brain stem – does not include:

a) Cerebellum                       

b) Medulla Oblongata

c) Pons Varoli                       

d) Mid brain

Answer: A

25. Which of the following is not a disaccharide?

a) Galactose             

b) Maltose     

c) Sucrose                

d) Lactose

Answer: A