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Which of the following is incorrect in a galvanic cell?
(1) Reduction occurs at cathode
(2) The electrode at which electrons are lost is called cathode
(3) Oxidation occurs at anode
(4) The electrode at which electrons are gained is called cathode
(2) The electrode at which electrons are lost is called cathode
(2) The electrode at which electrons are lost is called cathode
See lessThe increasing order of bond order of O2,O+2,O2– – is
(1) O2,– – O–2, O+2, O2
(2) O2-2, O–2, O2, O+2
(3) O+2, O2, O–2, O2– –
(4) O2, O+2, O–2, O2– –
Correct option (2) O2-2, O-2, O2, O2+ Explanation:Increasing bond order: 1.0, 1.5, 2.0, 2.5.
Correct option (2) O2-2, O–2, O2, O2+
Explanation:
Increasing bond order: 1.0, 1.5, 2.0, 2.5.
See lessThe function f(x) = [x] the greatest integer function is continuous at
(1) 4
(2) – 2
(3) 1.5
(4) 1
The Correct option is (3) 1.5
The Correct option is (3) 1.5
See lessThe value of the sin 1° + sin 2° + … + sin 359° is equal to
(1) 1
(2) 180
(3) 0
(4) -1
Correct option (3) 0Explanation:G.E. (sin 1° + sin 359°) + (sin 2° + sin 358°) + ….= 0 + 0 + … + 0 = 0
Correct option (3) 0
Explanation:
G.E. (sin 1° + sin 359°) + (sin 2° + sin 358°) + ….
= 0 + 0 + … + 0 = 0
See lessA plane glass plate is placed over a various coloured letters (violet, green, yellow, red). The letter which appears to raised more
(1) Yellow
(2) Violet
(3) Red
(4) Green
Correct option (2) Violet Explanation:SN = t (1-1/h) As n increases, 1/h decreases and (1- 1/h) increases.∴ SN is more for that colour, for which n is moreAmong the given colours n is more for violet. Therefore it appears to be raised more.
Correct option (2) Violet
Explanation:
SN = t (1-1/h) As n increases, 1/h decreases and (1- 1/h) increases.
∴ SN is more for that colour, for which n is more
Among the given colours n is more for violet.
Therefore it appears to be raised more.
See lessOne of the following area is an example for secondary succession, if the succession takes place in/on
(1) newly created pond
(2) abandoned farm land
(3) bare rock
(4) newly cooled lava
(2) abandoned farm land
(2) abandoned farm land
See lessSome of the events occur during life cycle of plasmodium are given below. Identify the correct statement.
(1) Female mosquito take up sporozoites with blood meal
(2) The sporozoites reproduce sexually in liver cells
(3) When mosquito bites a man, gametocytes are injected
(4) The gametocytes develop in RBC
(4) The gametocytes develop in RBC
(4) The gametocytes develop in RBC
See lessWhich one of these is not an accessory glands in male reproductive system?
(1) Cowper’s gland
(2) Prostate gland
(3) Bartholin’s gland
(4) Seminal vesicle
(3) Bartholin’s gland
(3) Bartholin’s gland
See lessIn which type of interactions, both the interacting organisms do not live close together?
(1) Mutualism
(2) Predation
(3) Competition
(4) Parasitism
(3) Competition
(3) Competition
See lessSnow blindness is caused due to
(1) Acid rain
(2) Ozone hole
(3) Green house effect
(4) Nuclear winter
(2) Ozone hole
(2) Ozone hole
See less