101. Identify thie sweet odourcd organic substance from the following
(1) Chloroform
(2) Acetaldehyde
(3) Ethyl acetate
(4) Acctic acid
102. Ethanoic acid liberates hydrogen gas when it reacts with which of the following?
(1) NaOH
(2) NaHCO3
(3) Na2CO3
(4) Na
103. The volatile metal compounds of copper, calcium, strontium are generally used in fire
works to get colours. This is because these metals have
(1) low ionisation enthalpics
(2) high ionisation enthalpies
(3) high clectronegativity values
(4) High clectron gain enthalpies
104. What is the annount of hydrochloric acid present in its aqueous solution having PH=2 in gL-1? (molar mass of hydrochloric acid=36.5g mol-1)
(1) 3.65
(2) 7.30
(3) 0.365
(4) 0.730
105. From the list of metals furnished here under, the number of metals which can react with
both acids and bases is
I) Aluminium
II) Zinc
III) Beryllium
IV) Iron
V) Calcium
(1) 2
(2) 1
(3) 3
(4) 4
106. What are the gascous products liberated at anode, and cathode respectively when dilute
aqucous solution of sulphuric acid is electrolysed ?
(1) SO2, H2
(2) H2, SO2
(3) H2, O2
(4) O2, H2
107. Identify the correct statements related to Z-scheme of light reaction
I) Transfer of electrons start from PSII
II) The electrons passed down the chain to PSII again
III) The electrons reaches finally downhill to NADP+
IV. The electron carriers are not placed in a sequence on a redox potential scale
(1) I,II
(2) III, IV
(3) I, III
(4) II, III
108. Name the final compound and its total number of carbon atoms in Glycolysis of respiration
(1) Phosphoglyceric acid-3C
(2) Oxaloacetic acid -4C
(3) Pyruvic acid-3C
(4) Malic acid – 4C
109. Match the following
List-I List-II
A) Frankia I) Transpiration
B) K+ pump theory II) Imbibition
C) Translocation III) Alnus
D) Solid colloids IV) Bulk movement
The correct answer is
. A B C D
(1) II III IV I
(2) III I IV II
(3) I IV III I
(4) IV III II I
110. Characters of garden pea plant selected by Mendel for hybridization experiments from the
following
I) Colour of the flower
II) Colour of the pod
III) – Shape of the leaf
IV) Position of the leaf
(1) I, II
(2) II, III
(3) III, IV
(4) II, IV
111. Choose the correct combinations from the following
I) Auxin – Differentiation of shoots and roots
II) Gibbercllins – Opening of stomata
III) Cytokinins – Delaying the aging in leaves
IV) ABA – Seed dormancy
(1) I, II, III
(2) I, III, IV
(3) II, II, IV
(4) I, II, IV
112. Identify incorrect pair regarding ecology
I) Tropical rain forests – Base of mountains
II) Niche – Special position of the food chain
III). Biomass – Living material that can be converted into energy
IV) Biological control – Predator of parasite of the crop
(1) I, III
(2) I, IV
(3) II, III
(4) II, IV
113. In plant reproduction, fusion of the second male gainete with secondary nucleus forms
this structure with this nuclear condition
(1) Nucellus – 3n
(2) Zygote-2n
(3) Perisperm – 2n
(4) Endosperm-3n
114. Choose correct pairs from the following:
I) Bentham – Introduction of binominal nomenclature
II) National Botanical Garden – Kolkata
III) Malus malus -Tautonomy
IV) Identification – Floras
(1) I, IV
(2) II, III
(3) I, III
(4) III, IV
115. Study the following table and identify the correct combinations
(1) I, II
(2) II, III
(3) I, IV
(4) III, IV
116. Assertion (A): Food does not enter the trachea during swallowing
Reason (R): Glottis is guarded by epiglottis
(1) Both (A) and (R) are true. (R) is correct explanation for (A)
(2) Both (A) and (R) are true. (R) is not correct explanation for (A)
(3) (A) is true, but (R) is false
(4) (A) is false, but (R) is true
117. Total lung capacity of human beings is
(1) 1200ml
(2) 3000ml
(3) 500ml
(4) 5800ml
118. Course of blood circulation in human heart is
(1) Left atrium → Right ventricle → Left ventricle → Right atrium
(2) Left ventricle → Left atrium → Lungs → Right atrium → Right ventricle
(3) Right arriurn → Right ventricle → Lungs → Left atrium → Left ventricle
(4) Left atrium → Left ventricle → Lungs → Right atrium → Right ventricle
119. Human sweat contains
(1) Citric acid
(2) Ascorbic acid
(3) Lactic acid
(4) Pyruvic acid
120. In catalytic converters, the following element is not used
(1) Palladium
(2) Sodium
(3) Platinum
(4) Rhodium
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