NTSE SAT Chemistry Papers 05
NTSE SAT Chemistry Papers 05
This is NTSE SAT Chemistry Papers 05 .. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
Which statement is correct regarding ethane, ethene and ethyne?
- AEthyne is strongest acid and C-H bond length is shortestCorrect
- BEthene is the strongest acid and C-H bond length is shortest
- CEthane is strongest acid and C-H bond length is longest
- DEthyne is weakest acid and C-H bond length is longest
2
10 gm \({H_2}\) and 64 gm \({O_2}\)were taken in a sealed vessel and exploded. The amount of water produced in the reaction was
- A1 mole
- B3 mole
- C4 moleCorrect
- D2 mole
3
1 mole of a hydrocarbon ‘X’ undergoes complete saturation with 1 mole of hydrogen in presence of a heated catalyst. What would be the formula of ‘X’?
- A\({C_2}{H_6}\)
- B\({C_7}{H_{16}}\)
- C\({C_2}{H_2}\)
- D\({C_5}{H_{10}}\)Correct
4
Which of the following are isomers?
- APropane and Propyne
- BButane and Isobutene
- CButane and IsobutaneCorrect
- DEthane and Ethene
5
Which of the following is a double salt?
- APotash alumCorrect
- BGlauber
- CPotassium Ferrocyanide
- DBlue Vitriol
6
If Z is a compressibility factor, van der waals equation at low pressure can be written as:
- A\(Z = 1 + \frac{{Pb}}{{RT}}\)
- B\(Z = 1 - \frac{a}{{VRT}}\)Correct
- C\(Z = 1 - \frac{{Pb}}{{RT}}\)
- D\(Z = 1 + \frac{{RT}}{{Pb}}\)
7
The metal that can be obtained by electrolysis of an aqueous solution of its salts is:
- ACa
- BCr
- CMg
- DZnCorrect
8
Which of the following oxide of nitrogen is ionic?
- ANO
- B\(N{O_2}\)
- C\({N_2}{O_3}\)
- D\({N_2}{O_5}\)Correct
9
The equivalent conductance of Nacl at concentration C and at infinite dilution are \({\lambda _c}\)and \({\lambda _ \propto }\)respectively. The correct relationship between \({\lambda _c}\)and \({\lambda _ \propto }\)is given by(Where the constant B is positive)
- A\({\lambda _c} = {\lambda _ \propto } + B\sqrt C \)
- B\({\lambda _c} = {\lambda _ \propto } - B\sqrt C \)Correct
- C\({\lambda _c} = {\lambda _ \propto } + BC\)
- D\({\lambda _c} = {\lambda _ \propto } - BC\)
10
On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide the organic compound formed is:
- AAn alkanediol
- BAn alkanol
- CAn alkyl cyanide
- DAn alkyl isocyanideCorrect
11
Which one of the following bases is not present in DNA?
- ACytosine
- BAdenine
- CThymine
- DQuinoloneCorrect
12
In which of the following reactions \({H_2}{O_2}\)acts as a reducing agent:\({H_2}{O_2} + 2{H^ + } + 2e \to 2{H_2}O\)\({H_2}{O_2} - 2e \to {O_2} + 2{H^ + }\)\({H_2}{O_2} + 2e \to 2(O{H^ - })\)\({H_2}{O_2} + 2O{H^ - } - 2e \to {O_2} + 2{H_2}O\)
- A2, 4Correct
- B1, 2
- C1, 3
- D3, 4
13
The IUPAC name of \({C_6}{H_5}CN\)
- ABenzonitrileCorrect
- BBenzene Cyanide
- CPhenyl Cyanide
- DPhenylacetonitrile
14
For the non-stoichiometric reaction \(2A + B \to C + D\), the following kinetic data were obtained in three separate experiments, all at 298 K Initial concentration (A) 0.1 M 0.1 M 0.2 M Initial Concentration (B) 0.1 M 0.2 M 0.1 M Initial rate of function of C \((mol\,{L^{ - 1}}{s^{ - 1}})\)0.1 M \(1.2 \times {10^{ - 3}}\) \(1.2 \times {10^{ - 3}}\) \(2.4 \times {10^{ - 3}}\) The rate of the formation of C is
- A\(\frac{{dc}}{{dt}} = K[A][B]\)
- B\(\frac{{dc}}{{dt}} = K[A]\)Correct
- C\(\frac{{dc}}{{dt}} = K{[A]^2}[B]\)
- D\(\frac{{dc}}{{dt}} = K[A]{[B]^2}\)
15
Which of the following is known as Freon?
- A\(C{H_2}{F_2}\)
- B\(CHC{l_3}\)
- C\(CC{l_2}{F_2}\)Correct
- D\(C{F_4}\)