2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution. Then find out molarity of resultant solution
Options
(a) 0.80 M (b) 1.0 M (c) 0.73 […]
Which of the following shows maximum number of oxidation states
Options
(a) Cr (b) Fe (c) Mn (d) V
Correct Answer:
Mn
Explanation:
No explanation available. Be the first to write the explanation […]
General electronic configuration of lanthanides is
Options
(a) (n – 2) f¹⁻¹⁴ (n – 1) s²p⁶d⁰⁻¹ ns² (b) (n – 2) f¹⁰⁻¹⁴ (n – 1) d⁰⁻¹ ns² (c) (n – 2)f⁰⁻¹⁴ (n – 1)d¹⁰ […]
In the silver plating of copper, K[Ag(CN)₂] is used instead of AgNO₃. The reason is
Options
(a) a thin layer of Ag is formed on Cu (b) more voltage is required (c) Ag⁺ […]
Enzymes actually
Options
(a) are biological catalysts (b) are biochemical enhancers (c) decrease rate of reaction (d) increase activation energy
Correct Answer:
are biological catalysts
Explanation:
No explanation available. Be the first to […]
In electrolysis of NaCl when Pt electrode is taken then H₂ is liberated at cathode while with Hg cathode it forms sodium amalgam
Options
(a) Hg is more inert than Pt (b) More […]
In a P-N junction
Options
(a) P and N both are at the same potential (b) High potential is at N side and low potential is at P side (c) High potential is […]
Which of the following is or the property of a cathode ray
Options
(a) It casts shadows (b) It produces heating effect (c) It produces flourescence (d) It does not deflect in electric […]
If particles are moving with same velocity, then maximum de Broglie wavelength will be for
Options
(a) Neutron (b) Proton (c) α-particle (d) β-particle
Correct Answer:
β-particle
Explanation:
No explanation available. Be the […]
When ultraviolet rays are incident on metal plate, then photoelectric effect does not occur. It occur by the incidence of
Options
(a) Radio-waves (b) Infra red rays (c) Green house effect (d) X-rays
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