Which alloy is used for making bullets and lighter flints?

The following statements are based on the osmotic pressure of solutions. The correct statements are
(A) Molar concentration is same for isotonic solutions
(B) Solutions which have same osmotic pressure at same temperature arecalled isotonic solutions
(C) No osmosis occurs when isotonic solutions are separated by semipermeable membrane
(D) A 1.9% Sodium Chloride solution has equivalent osmotic pressure to that of fluid inside blood cells
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Read the passage carefully and answer the questions
The chemical reactions proceed at different rates which depend on various factors like concentration, temperature, etc. Rate law is an expression which relates the rate of reaction with concentration of various reacting species in the reaction. For a first order reaction, the concentration of the reactant after time \(t\) is related with its initial concentration by the relation, \(C=C_0 e^{-k t}\). The rate constants for different orders have different expressions. For a first order reaction, \(k=\frac{2.303}{t} \log \frac{a}{a-x}\), where \(a\) is the initial concentration and \(x\) is the extent of reaction.
Which plot is linear with negative slope for a first order reaction

An excess consumption of which of these compounds causes blindness and death?

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

The mass percentage of a component of a solution is defined as:

The correct sequence of steps during the corrosion of iron is
(A) Ferrous ions are oxidized by atmospheric oxygen
(B) Hydrated ferric oxide (\(\text{Fe}_2\text{O}_3 \cdot \text{H}_2\text{O}\)) formed with production of \(\text{H}^{+}\) ions
(C) At a particular spot of iron object, oxidation takes place and that spot behaves as anode
(D) Electron released at anode moves through metal and reduces oxygen in the presence of \(\text{H}^{+}\)
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Two dice are thrown simultaneously. If X denotes the number of sixes, then the variance of X is:

The two curves \(x^3-3 x y^2+15=0\) and \(3 x^2 y-y^3+17=0\) :

Among the following, which is a non-essential amino acid?

After industrialization in 1920 in England, the proportion of dark winged and white winged moths reversed because of:

Match List - I with List - II.

List - I	List - II
(A) Leydig Cell	(I) GnRH
(B) Hypothalamus	(II) Androgens
(C) Growing follicle	(III) Progesterone
(D) Corpus luteum	(IV) Estrogen

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Let \(f(x)=\left\{\begin{array}{ll}\frac{|x|}{x}, & x \neq 0 \\ 1, & x=0\end{array}\right.\), and \(g(x)=\left\{\begin{array}{ll}x \sin \frac{1}{x}, & x \neq 0 \\ 0, & x=0\end{array}\right.\). Then at the origin, which one is true?