NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension: Questions 254  259 of 1042
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Question number: 254
» Chemistry » Physical and Chemical Changes
Question
Which of the following characteristics are associated with gaseous state?
Choices
Choice (4)  Response  

a.  Definite shape, compressible, fixed volume 

b.  Fixed shape, incompressible, closely packed 

c.  No fixed shape and size, highly compressible 

d.  Incompressible, fixed shape and size 

Question number: 255
Question
The value of is
Choices
Choice (4)  Response  

a.  2cos ^{2} Θ 

b.  cos 2 Θ 

c.  2 cos Θ 

d.  None of the above 

Question number: 256
Question
A man buys 4 tables and 5 chairs for Rs. 1000. If he sells the tables at 10 % profit and chairs 20 % profit, he earns a profit of Rs. 120. What is the cost of one table?
Choices
Choice (4)  Response  

a.  Rs. 220 

b.  Rs. 200 

c.  Rs. 240 

d.  Rs. 260 

Question number: 257
» Chemistry » Periodic Classification of Elements
Question
Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?
Choices
Choice (4)  Response  

a.  By cyanobacteria 

b.  By denitrification 

c.  By electrical discharges in the atmosphere 

d.  By industrially synthesised fertiliser 

Question number: 258
Question
What is the probability of getting at least one head when two coins are tossed simultaneously?
Choices
Choice (4)  Response  

a.  0.5


b.  0.66


c.  0.75


d.  0.25 

Question number: 259
Question
From the top of a pillar of height 20 m the angles of elevation and depression of the top and bottom of another pillar are 30° and 45°, respectively. The height of the second pillar (in m) is
Choices
Choice (4)  Response  

a.  20


b. 


c. 


d. 

