Directorate of Government Examinations, Telengana
has issued the Answer key of NTSE Stage I 2017-18
last date to file objections is 20.11.17
Objections in MAT Paper
Correct answer not given in option. So, it should be bonus.
No perfect pattern follows from any option. So, it should be bonus.
Correct answer is 100 not in option. So, it should be bonus.
No of line in the corner in each figure is 4, except option 1. So, answer should be option 1.
For each of the following groups of four words, find the incorrectly spelt word.
Q.76
(1) quarrelled
(2) rebellions
(3) commission
(4) miraculous
Answer given in the official answer key - (1) biased
This question should be given bonus as all the four words are correctly spelt according to the Merriam Webster Dictionary which is a world renowned dictionary.
Objections in the SAT Paper
Objections in the SAT Paper
Q 104. What is the acceleration of the race car that moves at constant velocity of 300 km/hr.
The answer to this question will be zero. When a body moves with a constant velocity, its acceleration is zero which is not given in the options.so this question should be a bonus.
Q.111. A wire of length 1 m and of radius 0.1 mm has a resistance of 100 Ohm. The resistivity of material is
The answer to this question is 0.00000314 ohm metre. which is not given in any option.
R = 100 * 3.14 * 0.1* 0.1* 10^-6
R = 314 * 10^-8 Ohm metre
so this question should be a bonus.
Q.125 Miscible liquids can be separated by
(1) Distillation process (2) Fractional
distillation (3) Chromatography(4) Separating funnel
ANS: option (1) and option (2) both are correct
Reference
: NCERT BOOK SCIENCE CLASS 9 CHAPTER IS MATTER AROUND US PURE PAGE NO. 21 AND
22
SOLUTION:
Distillation
is used for the separation of components of a mixture containing two
miscible liquids that boil without decomposition and have sufficient difference
in their boiling points. To separate a mixture of two or more miscible liquids
for which the difference in boiling points is less than 25 K, fractional
distillation process is used, for example, for the separation of different
gases from air, different factions from petroleum products etc. The apparatus
is similar to that for simple distillation, except that a fractionating column
is fitted in between the distillation flask and the condenser.
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