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Consider the following species :
$CN^+, CN^–, NO$ and CN
Which one of these will have the highest bond order?
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Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is $1s^2 2s^2 2p^3$, the simplest formula for this compound is
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Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is
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Which one is a wrong statement?
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Double fertilization is
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What is the role of $NAD^{+}$ in cellular respiration?
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In which of the following forms is iron absorbed by plants?
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Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
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Pollen grains can be stored for several years in liquid nitrogen having a temperature of
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Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
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