NTSE Sample Questions & Solution 2016-17 : Kerala SAT (Stage-1)

NTSE Sample Questions 2016-17 : Kerala SAT (Stage-1)


1. The enzymes commonly called ‘Genetic Scissors’ are
(1) Ligases    (2) Lipases     (3) Restriction endonucleases      (4) Proteases
Answer (3)
Solution
The enzymes commonly called genetic scissor’s are

2. Chooses the group that contains fungi only
(1) Euglena, lichen     (2) Yeast, mushroom       (3) Anabaena, Amoeba     (4) Paramecium, mycoplasma
Answer (2)
Solution
Choose the group that contains fungi only

3. Climbers grow towards and around a support is an example of
(1) Hydrotropism (2) Haptotropism (3) Geotropism (4) Phototropism
Answer (2)
Solution
Climbers grow to wards and around a support is an example of

4. Select the correct statement regarding the arrangement of aminoacidds in beta (β)chain of haemoglobin
(1) Same in man and rat           (2) Same in man and chimpanzee
(3) Different in man and chimpanzee      (4) same in man and gorilla
Answer (3)
Solution
Select the correct statement regarding the arrangement of amino ad in beta chain of hemoglobin

5. The gas responsible for ozone depletion is
(1) Nitrogen and argon    (2) Carbon dioxide      (3) Carbon monoxide      (4) Chlorofluorocarbons
Answer (4)
Solution
The gas responsible for 3 O depletion

6. Chromosomes are composed of
(1) DNA and protein    (2) RNA and lipids      (3) Ribosomes and lipids      (4) DNA and lipids
Answer (1)
Solution
Chromosomes are composed of

7. Choose the immune response of basophil
(1) Engulfs and destroys the bacteria
(2) Produces chemical substances that destroy foreign bodies
(3) Dilates the blood vessels
(4) Produces chemical substances needed for inflammatory response
Answer (1)
Solution
Choose the immure response of basophil

8. Decreases in the production of dopamine causes
(1) Parkinson’s     (2) Meningitis      (3) Alzheimer’s      (4) Epilepsy
Answer (1)
Solution
Decrease in the production of dopamine causes

9. The excretory organ in cockroach is
(1) Kidney      (2) Malpighian tubules      (3) Contractile vacuoles      (4) Nephridia
Answer (2)
Solution
Excretory organ in cockroach is

10. The three R’s to save the environment represent
(1) Repeat, Reduce, Resale                 (2) Reuse, Reduce, Resale
(3) Recycle, Reuse, Repeat                (4) Reduce, Recycle, Reuse
Answer (4)
Solution
The three R’s to save environment represent

11. Gland are modified from of
(1) Epithelial tissue           (2) Cardiac tissue           (3) Muscular tissue      (4) Connective tissue
Answer (1)
Solution
Glands are modified from of

12. Movement of water molecules from a region of its higher concentration to a region of its lower concentration through a semi permeable membrane is called
(1) Plasmolysis     (2) Endocytosis     (3) Osmosis     (4) Diffusion
Answer (3)
Solution
Movement of water molecules from a region of its higher none to a region of its lower conc. through a semi permeable membrard is called

13. Which of the following statement is correct about tendons?
(1) Connect bones to bones          (2) Connect bones to muscles
(3) Smoothen bound surfaces        (4) Fibrous tissue with high flexibility
Answer (2)
Solution
Which of the following statement is correct about tendons?

14. Select the process that occurs in dark reaction
(1) Light energy is converted into chemical energy       (2) Water splits into hydrogen and oxygen
(3) Hydrogen is added to carbon dioxide                       (4) Oxygen is evolved
Answer (3)
Solution
Select the process that occurs in dark reaction

15. Which of the following statements DO NOT match which the postulates of Bohr’s mode of atom?
(a) Electrons are revolving around the nucleus in specified paths called orbits/shells
(b) Each shell is associated with definite amount of energy
(c)Electron, while revolving through a particular shell can increases or decreases its energy
(d) Energy of the shells decreases as their distance form nucleus increases
Select the correct alternative
(1) C and (d)       (2) (b) and (c)      (3) (a) and (c)      (4) (b) and (d)
Answer (1)
Solution
The energy of electron in a particular cell is quantized Energy of shells 1/Distance b/w nucleus & shell

16. Which of the following statements are NOT CORRECT?
(1) Isobars are atoms of same elements      (2) Isotopes are atoms of different elements
(3) Isotones are atoms of same elements      (4) Isotones are atoms of different elements
Answer (3)

17. Which of the following represents the sequence in which the given compounds are arranged in the increasing order of the electronegative difference of their component elements?CH4 , NaCl,CO, Na2O,MgCl2

18. Water is a compound with relatively low molecular mass (18g mol-1 ). But it exists as a liquid at room temperature. This is because
(1) Water molecules have angular geometry
(2) Elect negatively difference between hydrogen and oxygen is less
(3) Water hydrogen and oxygen is less
(4) Water is a universal solvent
Answer (3)
Conceptual

19. Which of the following represents pairs of metalloids?
(a) Si & Sb             (b) Pb & Sb           (c) Ru & Rh          (d) Ge & As
(1) (b) and (d)        (b) (a) and (c)       (c) (b) and (c)     (d) (a) and (d)
Answer (4)
Solution
Metalloids: Si
Ge          As
              Sb           Tc
                             Po

20. Which of the following reactions requires the highest temperature to occur?
(1) N2 +O2 →2NO                                      (2) 2NO2 +O2 →2NO2
(3) NH4NO2→N2+2H2O                             (4) 4NO2+2H2O+O2→4HNO3
Answer (1)
Solution
Conceptual

21. The total number of elections in 1kg glucose (C6H12O6) is [Molecular mass of glucose is 18 u]

22. Which of the following are NOT CORECT for a gaseous reversible reaction when pressure is increased?
(a) Distance between gaseous molecules decreases
(b) Number of molecules per unit volume decreases
(c) Reaction proceeds in the direction in which there is increases in number of moles
(d) Reaction proceeds in the direction in which there is decrease in number of moles
Selection the correct alternative
(1) (a) and (d)             (2) (b) and (d)             (3) (a) and (c)               (4) (b) and (c)
Answer (4)
Solution

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(Books) National Talent Search Scheme (NTSE) Exam

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