81. Which of the following is not an ingredient of the Bordeaux mixture?
(A) Quick lime
(B) Water
(C) Copper sulphate
(D) Copper nitrate
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82. What is the reason of Red-yellow colour of soil?
(A) Organic matter
(B) Silica
(C) Lime
(D) Ferric oxides
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83. Which is the six carbon containing acid formed in Kreb’s cycle?
(A) Oxaloacetic acid
(B) Citric acid
(C) Ketoglutaric acid
(D) Succinic acid
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84. What is the ionic product of pure water at 25°C temperature?
(A) 14 M2
(B) 1×10-10 M2
(C) 1×10-14 M2
(D) 1×10-7 M2
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85. The main function of Pneumatophores is
(A) Absorption of water
(B) Absorption of moisture
(C) Support and fixation of plant
(D) Respiration
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86. Ethanol on heating with Conc. H2SO4 at 443 K temperature forms
(A) H3C – O – CH3
(B) CH2 = CH2
(C) CH3COOH
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87. Which of the following is a class of simple, heat-labile proteins occurring in seeds of Cereals, soluble in dilute acids and alkalies?
(A) Pectin
(B) Globulin
(C) Glutelin
(D) Histone
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88. Calculate magnetic moment of Cr+3 (aq) ion.
(A) 2.83 BM
(B) 3.87 BM
(C) 2.00 BM
(D) 1.89 BM
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89. Match the Algal Class and their Reserve Food.
Algal Class – Reserve Food
i. Cyanophyceae 1. Starch
ii. Chlorophyceae 2. Floridean starch
iii. Phaeophyceae 3. Cyanophycean starch
iv. Rhodophyceae 4. Laminarin and Mannitol
. i ii iii iv
(A) 3 1 4 2
(B) 1 2 3 4
(C) 4 3 2 1
(D) 4 2 1 3
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90. Molecular orbitals of diatomic molecules are designated with the following
(A) Only by σ
(B) Only by π
(C) Only by δ
(D) All of the above
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