NEET 2020

177 Questions • 180 Minutes • 2020

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Q41
For transistor action, which of the following statements is correct ?
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Q42
For which one of the following, Bohr model is not valid ?
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Q43
What is the change in oxidation number of carbon in the following reaction ? $CH_4(g) + 4Cl_2(g) \rightarrow CCl_4(l) + 4HCl(g)$
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Q44
On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be :
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Q45
An increase in the concentration of the reactants of a reaction leads to change in :
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Q46
Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as :
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Q47
Which of the following alkane cannot be made in good yield by Wurtz reaction ?
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Q48
Which of the following is a natural polymer ?
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Q49
A mixture of $N_2$ and Ar gases in a cylinder contains 7 g of $N_2$ and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of $N_2$ is : [Use atomic masses (in g $mol^{-1}$) : N = 14, Ar = 40]
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Q50
Match the following and identify the correct option. [table] List-I | List-II ; (a) $CO(g) + H_2(g)$ | (i) $Mg(HCO_3)_2 + Ca(HCO_3)_2$ ; (b) Temporary hardness of water | (ii) An electron deficient hydride ; (c) $B_2H_6$ | (iii) Synthesis gas ; (d) $H_2O_2$ | (iv) Non-planar structure [/table]
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Q51
For the reaction, $2Cl(g) \rightarrow Cl_2(g)$, the correct option is :
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Q52
An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is :
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Q53
Urea reacts with water to form A which will decompose to form B. B when passed through $Cu^{2+}$ (aq), deep blue colour solution C is formed. What is the formula of C from the following ?
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Q54
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :
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Q55
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
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Q56
The number of protons, neutrons and electrons in $^{175}_{71}Lu$, respectively, are :
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Q57
Which of the following set of molecules will have zero dipole moment ?
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Q58
Identify a molecule which does not exist.
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Q59
Identify the incorrect match. [table] Name | IUPAC Official Name ; (a) Unnilunium | (i) Mendelevium ; (b) Unniltrium | (ii) Lawrencium ; (c) Unnilhexium | (iii) Seaborgium ; (d) Unununnium | (iv) Darmstadtium [/table]
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Q60
The rate constant for a first order reaction is $4.606 \times 10^{-3}$ $s^{-1}$. The time required to reduce 2.0 g of the reactant to 0.2 g is :
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Paper Info
  • Exam: NEET
  • Year: 2020
  • Questions: 177
  • Duration: 180 mins
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