List of top NanoScience Questions

Match List-I with List-II:

List-I	List-II
(A) Principal Quantum Number (n)	(ii) 1, 2, 3,...
(B) Azimuthal Quantum Number (l)	(iv) 0, 1, 2,... n - 1
(C) Magnetic Quantum Number (m_l)	(iii) 0, ± 1, ± 2, ± 3,..., ± 1
(D) Spin Quantum Number (s)	(i) -1/2, +1/2

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) XeF₂	(iii) Linear
(B) BF₃	(i) Trigonal Planar
(C) XeF₄	(ii) Distorted Octahedral
(D) SF₆	(iv) Regular Octahedral

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) Linus Pauling	(iii) Electronegativity
(B) Albert Einstein	(ii) Photoelectric effect
(C) Ernest Rutherford	(i) Alpha particle scattering experiment
(D) Max Planck	(iv) Black body radiations

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Match List-I with List-II:

List-I	List-II
(A) Alkaline phosphatase	(i) Removes phosphate group at 5’ end of DNA
(B) DNA Polymerase	(ii) Nick translation
(C) SI Nuclease	(iii) Cleaves ssDNA
(D) DNase I	(iv) Cleaves DNA

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) IgA	(i) Basophils
(B) IgE	(ii) Secretory components
(C) IgG	(iii) Pentamer
(D) IgM	(iv) Crosses Placenta

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Match List-I with List-II:

List-I	List-II
(A) Thiamine (B1)	(i) Riboflavin adenine nucleotide
(B) Riboflavin (B2)	(ii) Tetrahydrofolic acid
(C) Niacin	(iii) Nicotinamide adenine dinucleotide
(D) Folic acid	(iv) Co-carboxylase

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) CCl₄	(i) Insecticide
(B) CF₂Cl₂	(ii) Refrigerant
(C) CHI₃	(iii) Antiseptic for wounds
(D) CH₂Cl₂	(iv) Propellant for aerosols

The process of vulcanization makes rubber:
(A) Soluble in water,
(B) Elastic,
(C) Hard,
(D) Durable

Which of the following will give benzoic acid on acidic hydrolysis:
(A) Phenyl cyanide,
(B) Benzonitrile,
(C) Benzyl cyanide,
(D) Methyl benzoate

Two metals are completely miscible with each other to form a continuous range of solid solutions only if: (A) Two metals must be similar in size—their metallic radii must not differ by more than 15%. (B) Both metals must have the same crystal structure. (C) The chemical properties must be similar particularly the same electronegativity. (D) Both metals must have the same electrical conductivity.

Match List-I with List-II:

List-I (System)	List-II (Axial lengths and angles)
(A) Cubic	(I) \(a = b = c, \alpha = \beta = \gamma = 90^\circ\)
(B) Tetragonal	(II) \(a = b \neq c, \alpha = \beta = \gamma = 90^\circ\)
(C) Orthorhombic	(III) \(a \neq b \neq c, \alpha = \beta = \gamma = 90^\circ\)
(D) Hexagonal	(IV) \(a = b \neq c, \alpha = \beta = 90^\circ, \gamma = 120^\circ\)

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Arrange the following structures in terms of increasing order of confinement: (A) Quantum Well, (B) Bulk Material, (C) Quantum Dot, (D) Carbon Nanotube

The following species have an equal number of electrons. Arrange them in increasing order of their size:
(A). Ne
(B). Na+
(C). O2−
(D). F−
Choose the correct answer from the options given below:

Identify the correct statements with reference to VSEPR theory:
(A) Lone pairs cause more repulsion than double bonds,
(B) Double bonds cause more repulsion than a single bond,
(C) Single bonds cause more repulsion than a lone pair

Which of the following arrangements does not represent the correct order of properties stated against it?
(A). V2+ < Cr2+ < Mn2+ < Fe2+: Paramagnetic behavior
(B). Zn2+ < Ni2+ < Cr2+ < Fe2+: Number of unpaired electrons
(C). Sc3+ < Ti3+ < V3+ < Cr3+ < Mn3+: Number of oxidation states
(D). Co2+ < Cr2+ < Mn2+ < Ni2+: Stability in aqueous solution
Choose the correct answer from the options given below:

Crystalline materials possess:
(A) Sharp melting point and boiling point,
(B) Anisotropic properties,
(C) Periodic arrangement of atoms,
(D) Isotropic properties

Which of the following are the correct postulates of the quantum theory of light?
(A). Each photon of frequency v has the energy hv, the same as Planck’s energy.
(B). The higher v, the greater the photon energy hv.
(C). Blue color has lower energy than green color.
(D). Changing the intensity of the incident light beam will change the frequency v of the photon.
Choose the correct answer from the options given below:

The conditions for a reversible isothermal process are:
(A) Infinitesimally slow process,
(B) Constant Temperature

Sequential steps of Prophase I of Meiosis are:
(A) Zygotene,
(B) Pachytene,
(C) Leptotene,
(D) Diplotene,
(E) Diakinesis

Arrange the following in the order of increasing basic strength:
(A). NH₃
(B). PH₃
(C). AsH₃
(D). BiH₃
Choose the correct answer from the options given below:

Arrange the following in decreasing order of nucleophilicity:
(A). H₂O
(B). NH₃
(C). OH⁻
(D). NH₂−
Choose the correct answer from the options given below:

The correct order of steps in PCR is:
(A) Annealing,
(B) Denaturation,
(C) Extension

Which of the following enzymes of Krebs’ cycle is also involved in the mitochondrial electron transport system?

Arrange the following oxoacids in the order of their increasing acidic strength:
(A). HOCl
(B). HOCl₂
(C). HOCl₃
(D). HOCl₄
Choose the correct answer from the options given below:

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