NEET 2020 Phase 1

Which of the following is cationic detergent?

The calculated spin only magnetic moment of Cr2+ ion is?

Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following?

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

Identify the incorrect statement.

The number of Faradays(F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol-1) is :

On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be :

A mixture of N2 and Ar gases in a cylinder contains 7g of N2 and 8g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is :[Use atomic masses (in g mol\(-\)1) : N = 14, Ar = 40]

Elimination reaction of 2-Bromo-pentane to form pent-2-ene is :(A) \(\beta\)-Elimination reaction(B) Follows Zaitsev rule(C) Dehydrohalogenation reaction(D) Dehydration reaction

Which of the following alkane cannot be made in good yield by Wurtz reaction?

As alkene on ozonolysis gives methanal as one of the product, Its structure is :

Find out the solubility of Ni(OH)2 in 0.1M NaOH. Given that the ionic product of Ni(OH)2 is 2 \(\times\) 10-15.

Which of the following amine will give the carbylamine test?

Which of the following oxoacid of sulphur has \(-\)
O\(-\)
O\(-\)
linkage?

Match the following and identify the correct option.


(A)
CO(g) + H2(g)
(i)
Mg(HCO3)2 + Ca(HCO3)2




(B)
Temporary hardness of water
(ii)
An electron deficient hydride


(C)
B2H6
(iii)...

Identify the correct statements from the following :(A) CO2(g) is used as refrigerant for ice-cream and frozen food.(B) The structure of C60 contains twelve six-carbon rings and twenty five carbon rings.(C) ZSM-5, a type of zeolite, is used...

Which of the following is not correct about carbon monoxide?

Identify the incorrect match.


Name


IUPAC Official Name




(A)
Unnilunium
(i)
Mendelevium


(B)
Unniltrium
(ii)
Lawrencium


(C)
Unnilhexium
(iii)
Seaborgium
...

Match the following :



Oxide


Nature




(A)
CO
(i)
Basic


(B)
BaO
(ii)
Neutral


(C)
Al2O3
(iii)
Acidic


(D)
Cl2O7
(iv)
Amphoteric


W...

Which of the following is a natural polymer?

Identify the correct statement from the following :

What is the change in oxidation number of carbon in the following reaction?CH4(g) + 4Cl2(g) \(\to\) CCl4(l) + 4HCl(g)

The following metal ion activities many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.

HCl was passed through A solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallize(s)?

An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is :

The mixture which shows positive deviation from Raoult's law is :

The freezing point depression constant (Kr) of benzene is 5. 12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is rounded off upto two decimal places :

Which one of the following has maximum number of atoms?

The number of protons, neutrons and electrons in 17571Lu, respectively, are :

A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?

Paper chromatography is an example of :

Measuring Zeta potential is useful in determining which property of colloidal solution?

For the reaction, 2Cl(g) \(\to\) Cl2(g), the correct option is :

Hydrolysis of sucrose is given by the following reaction.Sucrose + H2O ⇌
Glucose + FructoseIf the equilibrium constant (Kc) is 2 \(\times\) 1013 at 800 K, the value of \(\Delta r{G^\Theta }\)
at the same temperature will be :

The correct option for free expansion of an ideal gas under adiabatic condition is :

A 40 \(\mu\)F capacitor is connected to a 200 V. 50 Hz ac supply. The rms value of the current on the circuit is, nearly :

A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is \({\pi \over 3}\). If instead C is
removed from the circuit, the phase difference is again $...

The energy equivalent of 0.5 g of a substance is :

For which one of the following, Bohr model is not valid?

When a uranium isotope \(_{92}^{235}U\)
is bombarded with a neutron, it generates \(_{36}^{89}Kr\) three neutrons and :

The capacitance of a parallel plate capacitor with air as medium is 6\(\mu\)F. With the introduction of a dielectric medium, the capacitance become 30 \(\mu\)F The permittivity of the medium is :$$\left( {{\varepsilon _0} = 8.85 \times {{...

Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass.The centre of mass of the system from the 5 kg particle is nearly at a distance of :

The solids which have the negative temperature coefficient of resistance are :

The color code of a resistance is given below : The values of resistance and tolerance, respectively, are

A charged particle having drift velocity 7.5\(\times\)10-4 ms-1 in an electric field of 3\(\times\)10-10 Vm-1 has a mobility in m2 V-1s-1 of :

Which of the following graph represents the variation of resistivity (\(\rho\)) with temperature (T) for copper?

A resistance wire connected in the left gap of a metre bridge balances a 10 \(\Omega\)
resistance in the right gap at a point which divides the bridge wire in the ratio 3:2. If the length of the resistance wire is 1.5 m, then the length o...

An electron is accelerated from rest through a potential difference of V volt. If the de-Broglie wavelength of the electron is 1.227 \(\times\) 10-2 nm, the potential difference is :

Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?

Light with an average flux of 20 W/cm2 falls on a non-reflecting surface at normal incidence having surface area 20 cm2. The energy received by the surface during time span of 1 minute is :