The identical cells connected in series are needed to heat a wire of length one meter and radius ‘r’ by 10⁰C in time ‘t’. How many cells will be required to heat the wire of […]
An electron in hydrogen atom makes a transition n₁ → n₂ where n₁ and n₂ are principal quantum number of the two states. Assuming Bohr’s model to be valid the time period of the electron […]
α- particles, β – particles and γ – rays are all having same energy. Their penetrating power in a given medium in increasing order will be
Options
(a) β, γ, α (b) γ, […]
The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1mA. The number of turns of the primary and secondary windings are 50 and 100 respectively. The […]
The displacement ‘x’ (in meter) of a particle of mass ‘m’ (in kg) moving in one dimension under the action of a force, is related to time ‘t’ (in sec) by t = √x + […]
How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?
Options
(a) Two (b) Three (c) Four (d) Five
Correct Answer:
Three
Explanation:
Phyllotaxy is […]
Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicine, Sweet pea, Petunia, Indigofera, Mustard, Soyabean, Tobacco and groundnut how many plants have corolla with valvate aestivation?
Options
(a) Five (b) Six (c) Seven (d) […]
In a cymose inflorescence the main axis
Options
(a) Terminates in a flower (b) Has unlimited growth (c) Bears a solitary flower (d) Has unlimited growth but lateral branches end in flowers
Correct […]
Which of the following statements is not true for stomatal apparatus?
Options
(a) Inner walls of guard cells are thick (b) Guard cells invariably possess chloroplasts and mitochondria (c) Guard cells are always […]
Which one of the following animals is correctly matched with its one characteristics and the taxon?
Options
(a) Duckbilled platypus – Oviparous – Mammalian (b) Millipede – Ventral nerve cord- Arachnida (c) Sea Anemone […]
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