1. What is the plural form of the word ‘genus’?
A. genusesB. generaC. genesisD. generous
2. If ABC is a right angled isosceles triangle, then cot2 A + cot2 B + cot2 C =?
A. 1 2B. 2C. − 1 2D. −1
3. In which phase CO₂-enriched blood comes to right atrium from cardiac muscle via coronary sinus?
A. Atrial systoleB. Ventricular diastoleC. Ventricular systoleD. Atrial diastole CO2
4. †Kvb evbvbwU ï×?
A. wcwcwjKvB. wccxwjKvC. cxwcwjKvD. wcwcjxKv
5. In case of reaction more product will be produced if- 2SO2 (g) + O2 (g) ⇌ 2SO3 (g), [ΔH = −197 kJ]
A. pressure is increasedB. pressure is decreasedC. heat is increasedD. equal increase in heat and pressure
6. Correct order of reactivity of RX in case of substitution reaction- SN 1
A. 3∘RX > 2∘RX > 1∘RXB. CH3X > 1∘RX > 2∘RXC. 2∘RX > 3∘RX > CH3XD. CH3X > 1∘RX > 3∘RX