NEET 2018

173 Questions • 180 Minutes • 2018

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Q141
A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. $H_2SO_4$. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be
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Q142
Which of the following oxides is most acidic in nature ?
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Q143
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity ?
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Q144
The compound A on treatment with Na gives B, and with $PCl_5$ gives C. B and C react together to give diethyl ether. A, B and C are in the order
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Q145
The compound $C_7H_8$ undergoes the following reactions : $C_7H_8 \xrightarrow{3Cl_2/\Delta} A \xrightarrow{Br_2/Fe} B \xrightarrow{Zn/HCl} C$ The product 'C' is
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Q146
Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is
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Q147
Which of the following molecules represents the order of hybridisation $sp^2$, $sp^2$, sp, sp from left to right atoms ?
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Q148
Which of the following carbocations is expected to be most stable ?
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Q149
Which of the following is correct with respect to -I effect of the substituents ? (R = alkyl)
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Q150
In the reaction Phenol + $CHCl_3$ + NaOH $\rightarrow$ Sodium salicylaldehyde ($o$-$O^-Na^+$ benzaldehyde) the electrophile involved is
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Q151
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
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Q152
Compound A, $C_8H_{10}O$, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively
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Q153
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code : [table] Column-I | Column-II ; a. $Co^{3+}$ | i. $\sqrt{8}$ B.M. ; b. $Cr^{3+}$ | ii. $\sqrt{35}$ B.M. ; c. $Fe^{3+}$ | iii. $\sqrt{3}$ B.M. ; d. $Ni^{2+}$ | iv. $\sqrt{24}$ B.M. ; | v. $\sqrt{15}$ B.M. [/table]
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Q154
Which one of the following ions exhibits d-d transition and paramagnetism as well ?
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Q155
Iron carbonyl, $Fe(CO)_5$ is
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Q156
The type of isomerism shown by the complex $[CoCl_2(en)_2]$ is
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Q157
The geometry and magnetic behaviour of the complex $[Ni(CO)_4]$ are
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Q158
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : a. 60 mL $\frac{M}{10}$ HCl + 40 mL $\frac{M}{10}$ NaOH b. 55 mL $\frac{M}{10}$ HCl + 45 mL $\frac{M}{10}$ NaOH c. 75 mL $\frac{M}{5}$ HCl + 25 mL $\frac{M}{5}$ NaOH d. 100 mL $\frac{M}{10}$ HCl + 100 mL $\frac{M}{10}$ NaOH pH of which one of them will be equal to 1 ?
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Q159
On which of the following properties does the coagulating power of an ion depend ?
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Q160
Given van der Waals constant for $NH_3$, $H_2$, $O_2$ and $CO_2$ are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied ?
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Paper Info
  • Exam: NEET
  • Year: 2018
  • Questions: 173
  • Duration: 180 mins
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