Thiosulphte \(\mathrm{S}_2 \mathrm{O}_3^{2-}\) is oxidized to __________ in presence of permanganate ion.

Which of the following is true for the given reaction?
\(\text{CH}_3-(\text{CH}_3)_3\text{C-N-CH}_3 + \text{Cl-SO}_2-\text{C}_6\text{H}_5 \rightarrow \text{No Reaction}\)

The correct IUPAC name of tert-butyl benzyl ether is-

Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, H2M and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Which of the following is liquid at \(20^{\circ} C\) ?
A. HCl
B. HI
C. HF
D. NH3
E. HBr
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
The coordination compounds are of great importance. These compounds are widely present in the mineral, plants and animal world and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine. For example, coordination compounds find use in many qualitative and quantitative chemical analysis. Some important metal extraction and purification make use of complex formation. Hardness of water can be estimated by stable complex formation of Ca\(^{2+}\) and Mg\(^{2+}\)
Impure nickel is converted to which of its complex to be decomposed to yield pure nickel?

Haloalkanes can be represented by the formula

Sodium salts of carboxylic acids \(( RCOONa )\) when heated with sodalime, yield

Area bounded by the curve \(|x|+|y|=1\) is:

A converging lens is used to form image on a screen. When the lower half of the lens is covered by an opaque screen then, the correct statements are :
(A) Intensity of Image will decrease.
(B) Intensity of Image will increase.
(C) Complete Image will be formed.
(D) Half the Image will disappear.

Match List-I with List-II

List-I (Integral)	List-II (Value)
(A) \(\int_{-1}^1(|x|+1) d x\)	(I) 0
(B) \(\int_{-2}^2|x+1| d x\)	(II) 2
(C) \(\int_{-1}^1 3|x|^2 d x\)	(III) 5
(D) \(\int_{-1}^1 x|x| d x\)	(IV) 3

Choose the Correct answer from the options given below :

Which one of the following pyramids of biomass is generally inverted in the ecosystems?

Given below are the steps involved in the process of zone refining for removing impurities which are more soluble in the melt than solid state of the metal.
A. Impurities get concentrated at one end.
B. As the heater moves forward, the pure metal crystallises out of the melt left behind and the impurities pass to the next zone.
C. A mobile heater surrounding the rod of impure metal is fixed at its one end.
D. The end is cut off.
E. The molten zone moves along with the heater which is moved forward.
Choose the correct answer from the options given below:

If the maximum value of the function \(f(x)=\frac{2 \log _e x}{x}, x>0\) occurs at \(x=e\), then \(e^3 f^{\prime \prime}(e)\) is equal to