11- Lichen is a plant belongs to the divisions of …………………
(A) Geranium
(B) Petunia
(C) Hydragea
(D) Thallophyta
12- …………….is a division of the plant kingdom including primitive forms of plant life showing simple plant body including unicellular to large algae, fungi and lichens.
(A) Geranium
(B) Petunia
(C) Hydragea
(D) Thallophyta
13- HCI is a Chemical formula of …..
(A) Hydrochloric acid
(B) Sodium hydroxide
(C) Potassium hydroxide
(D) None of the above
14-H2SO4 is a chemical formula of
(A) Sodium hydroxide
(B) Sulphuric acid
(C) Ammonium hydroxide
(D) None of the above
15- HNO3 is the chemical formula of which of the following?
(A) Acetic acid
(B) Sulphuric acid
(C) Nitric acid
(D) None of the above
16- CH3COOH is the chemical formula of ……………
(A) Ammonium hydroxide
(B) Potassium hydroxide
(C) Acetic acid
(D) Magnesium hydroxide
17- NaOH is
(A) Sodium hydroxide
(B) Calcium hydroxide
(C) Magnesium hydroxide
(D) Acetic acid
18- [Mg(OH)2] is the chemical formula for
(A) Sodium hydroxide
(B) Magnesium hydroxide
(C) Hydrochloric acid
(D) Ammonium hydroxide
19- Substances whose odour changes in acidic or basic media is called …………………….indicator.
(A) Natural
(B) Synthetic
(C) Olfactory
(D) None of the above
20- Which of the following is/are an example of active metal?
(A) Rubdium and Potassium
(B) Sodium and Cesium
(C) Lithium and Calcium
(D) All of the above
ANSWERS:
11-(D), 12-(D), 13-(A), 14-(B), 15-(C), 16-(C), 17-(A), 18-(B), 19-(C), 20-(D)