For the following questions answer them individually
In a plane, there are 16 non-collinear points. Then the number of straight lines formed is
A student has to score 30% marks throughout. If he gets 30 marks and fails by 30 marks, then the maximum marks set for the examination is
A man bought 20 cows in ā¹2,00,000. If the average cost of 12 cows is ā¹12500, then the average cost of remaining cows will be?
A sum at simple interest of $$13\frac{1}{2}%$$ per annum amounts to ā¹3080 in 4 yr, then the sum is
According to Slater's rules, the effective nuclear charge ($$Z_{eff}$$) for a 2p electron of carbon is-
According to the Lewis structure for HNNH, how many $$\sigma$$ bonds, $$\pi$$ bonds and lone pairs of electrons are present?
Given below are two statement:
Statement I: Hard acid form complexes with stabilities in the order : $$I^{-} <Ā Br^{-} < Cl^{-} < CF^{-}$$
Statement II: Soft acids form complexes with stabilities in the order : $$F^{-} < Cl^{-} < Br^{-} < I^{-}$$
In the light of the above statements, choose the most appropriate answer from the options given below:
The potential diagram for manganese at [$$H^+$$] = 1 is given as (values are in V)
x, y and z are