For the following questions answer them individually
Identify the INCORRECT statements from the following:
A. Notation $$_{12}^{24}Mg$$ represents 24 protons and 12 neutrons.
B. Wavelength of a radiation of frequency $$ 4.5\times10^{15}s^{-1} $$ is $$ 6.7\times10^{-8} $$m.
C. One radiation has wavelength =$$\lambda_1(900nm) $$ and energy= $$E_{1}$$. Other radiation has wavelength = $$\lambda_2(300nm) $$ and energy= $$E2 \cdot E1 : E_2= 3 : 1$$.
D. Number of photons of light of wavelength 2000 pm that provides 1 J of
energy is $$1.006 x 10^{16}$$.
Choose the correct answer from the options given below:
Given below are two statements:
Statement I: IMAGE is more stable than IMAGE as nine hyperconjugation interactions are possible in IMAGE.
Statement II: IMAGE is le ss stable than IMAGE as only three hyperconjugation interactions are possible in IMAGE
In the light of the above statements, choose the correct answer from the options given below
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Consider the above electrochemical cell where a metal electrode (M) is undergoing redox reaction by forming $$M^{+}(M\rightarrow M^{+}+e^{-})$$. The cation $$M^{+}$$ is present in two different concentrations $$c_{1}$$ and $$c_{2}$$ as shown above. which of the following statement is correct for generating a positive cell potential?
Given below are two statements:
Statement I
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Statement II
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In the light of the above statements, choose the correct answer from the options given below
In Carius method 0.2425 g of an organic compound gave 0.5253 g silver chloride.
The percentage of chlorine in the organic compound is
Which statements are NOT TRUE about $$XeO_2 F_2$$?
A. It has a see-saw shape.
B. Xe has 5 electron pairs in its valence sheU in XeO 2 F 2.
C. The $$O - Xe- O$$ bond angle is close to $$180^{o}$$.
D. The $$F- Xe -F$$ bond angle is close to $$180^{o}$$.
E. $$Xe$$ has 16 valence electrons in $$XeO_2 F_2$$.
Choose the correct answer from the options given below:
Observe the following reactions at T(K).
I. $$A\rightarrow$$products
II. $$5Br^{-}(aq)+BrO_{3}\text{ } ^{-}(aq)\rightarrow 3Br_2(aq)+3H_2O(l)$$
Both the reactions are started at 10.00 am. The rates of these reactions at 10.10 am are same. The value of $$-\frac{\triangle[Br^{-}]}{\triangle t}$$ at 10.10am. is $$2\times 10^{-4} mol \text{ }L^{-1}min^{-1}$$. The concentration of A at 10.10am is $$10^{-1}mol \text{ } L^{-1}$$. What is the first order rate constant (in min^{-1}) of reaction I?
Which of the following statements are TRUE about Haloform reaction?:
A. Sodium hypochlorite reacts with KI to give KOI.
B. KOI is a reducing agent.
C. $$ \alpha,\beta$$-unsaturated methylketone
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will give iodoform reaction.
D. Isopropyl alcohol will not give iodoform test.
E. Methanoic acid will give positive iodoform test.
Choose the correct answer from the options given below:
The oxidation state of chromium in the final product formed in the reaction between $$KI$$ and acidified $$K_2 Cr_2 O_7$$ solution is:
