Arrange the following electrolytes in the increasing order of van't Hoff factor (i) for complete dissociation of solute.
A. \(\left[ Co \left( NH _3\right)_6\right] Cl _3\)
B. \(MgCl _2\)
C. \(K _4\left[ Fe ( CN )_6\right]\)
D. KCl
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Which of the following statements are correct?
A. Tertiary alcohols undergo oxidation reaction when heated with Cu at 573 K
B. Salicylic acid is 2-hydroxybenzoic acid
C. Ease of dehydration of alcohols is in the order primary \(>\) secondary \(>\) tertiary
D. Electrophile attacks at o- and p- position in anisole
\(COOH - C _6 H _4- OCOCH _3\)
E. Aspirin is \(C _8 H _8 O _4\)
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Which of the following statement(s) is (are) not associated with \(\text{S}_\text{N}1\) reaction:
(A) Rearrangement is possible.
(B) The rate is affected by solvent polarity.
(C) The strength of nucleophile is involved in rate determining step.
(D) The reaction order of alkyl halides is tertiary > secondary > primary.
(E) Proceeds with complete inversion of configuration.
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Match the compounds given in List-I with the oxidation state of cobalt present in it given in

List-l (Compound)	List-II (Oxidation state of cobalt)
(A) \(\left[ Co ( NCS )\left( NH _3\right)_5\right]\left( SO _3\right)\)	(I) +3
(B) \(\left[ Co \left( NH _3\right)_4 Cl _2\right] SO _4\)	(II) +2
(C) \(Na _4\left[ Co \left( S _2 O _3\right)_3\right]\)	(III) \(0\)
(D) \(Co _2( CO )_8\)	(IV) \(+4\)

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The molality of solution obtained by dissolving 1.5 g of ethanoic acid \(CH _3 COOH\) in \(2 5 ~ g\) of benzene is :

Increasing order of reducing power of following hydrides would be
A. SbH 3
B. AsH3
C. NH3
D. PH3
E. BiH3
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Which of the following complexes are square planar?
(A) \(\left[ Ni ( CN )_4\right]^{2-}\)
(B) \(\left[ NiCl _4\right]^{2-}\)
(C) \(\left[ PtCl _4\right]^{2-}\)
(D) \(\left[ PdCl _4\right]^{2-}\)
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Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which of the following drugs are commonly used to quickly reduce the symptoms of allergy?

Match List-I with List-II

List-I (Potential difference across the terminal of a battery)	List-II (Situations)
(A) V = E	(I) Cell is being charged
(B) V = 0	(II) The internal resistance of a cell is zero
(C) V = E - ir	(III) cell is short-circuited
(D) V = E + ir	(IV) current is being drawn from a cell

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A real and smaller image of an object will be produced by

Read the passage carefully and answer the Questions
Carboxylic acids are the earliest organic compounds isolated from nature. These are also known as organic acids but are weaker acids as compared to mineral acids. However, they are more acidic than alcohols and phenols because of greater resonance stabilization of the parent acid and its conjugate base. The acidic strength is determined by the \(K _a\), which is called the acidity constant. The greater the value of \(K _a\), the greater the tendency of the acid to ionize and hence the stronger the acid. The acidic strength of the saturated aliphatic carboxylic acid depends upon the inductive effect and its position with respect to - COOH groups. Electron-donating substituents tend to decrease whereas electron -withdrawing substituents tend to increase the acidic strength. The acidic strength of the aromatic carboxylic acid, on the other hand depends upon both the inductive effect and the resonance effect of the substituents.
How can we express the (acidity constant) \(K_{ a }\) of RCOOH ?

Match List-I with List-II

List-I (Strategies of an organism)	List-II (Example)
(A) Organisms breed only once in their lifetime	(I) Desert lizard
(B) Organisms breed many times during their lifetime	(II) Oysters
(C) Organisms produce large number of small sized offspring	(III) Salmon fish and bamboo
(D) Some organisms show behavioral responses with variation in their environment	(IV) Birds and mammals

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About __________ the first cellular forms of life appeared on earth.