Question
| i. $F_2$ | (a) Polyatomic molecule |
| ii. $O _3$ | (b) Monoatomic molecule |
| iii. $P_4$ | (c) Diatomic molecule |
| iv. $He$ | (d) Triatomic molecule |
✓
Answer
i – c, ii – d, iii – a, iv – b.
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Similar questions
Match the column I with column II.
| 1. Universal Recipient | (a) Left Atrio Ventricular Valve |
| 2. Blood | (b) Thin and non-elastic cells |
| 3. Thymocytes | (c) Blood group AB |
| 4. Universal Donor | (d) Thick and elastic cells |
| 5. Mitral | (e) Blood group ‘O’ |
| 6. Veins | (f) Blood platelets |
| 7. Arteries | (g) Connective tissue |
| 1. Leukoplast | (a) Photosystems |
| 2. Accessory pigments | (b) Inner mitochondrial membrane |
| 3. Chlorophyll | (c) Chlorophyll and Carotenoids |
| 4. Cristae | (d) Colourless plastids |
| 5. Chl.a and Accessory pigments | (e) Green pigment |
| i. Copper | (a) Lustrous greyish white metal |
| ii. Iron | (b) Cn 112 |
| iii. Aluminium | (c) Reddish-brown metal |
| iv. Copernicium | (d) Silvery white metal |
FSH.
Position of the object placed infront of a convex lens are given in Column
I. Match them with the natures of the images formed by the convex lens given in column II.
I. Match them with the natures of the images formed by the convex lens given in column II.
| (i) Gain of electrons | (a) Oxidation reaction |
| (ii) Loss of electrons | (b) Combination reaction |
| (iii) Combustion of coal | (c) Redox reaction |
| (iv) Rusting of iron | (d) Reduction reaction |
| i. $H _2 O$ | (a) 180 g |
| ii. $NH _3$ | (b) 44 g |
| iii. $CO _2$ | (c) 17 g |
| iv. $C _6 H _{12} O _6$ | (d) 18 g |
| Alloy | Metals present | Uses |
| 1. Brass | Fe, C, Ni | Statues, Coins |
| 2. Bronze | Al, Mg, Mn, Cu | Aircraft, Pressure cookers |
| 3. Duralumin | Fe, C, Ni, Cr | Cables, Propeller |
| 4. Magnalium | Cu, Sn | Automobile parts, Utensils |
| 5. Stainless steel | Cu, Zn | Scientific instruments, Air craft |
| 6. Nickel steel | Al, Mg | Medals, decorative items |