Preparatory Examination - 2009 PART I - BOTANY 1. Why is base ratio in DNA constant ? Base ratio is constant in DNA because of complementary base pairing between the purines…

1. Cement is a material with adhesive and cohesive properties that makes it capable of bonding mineral fragment into a compact and rigid mass. The word cement seems to have…

1. BY AMIL KUMAR HRANGKHAWL III SEMESTER 2. •INTRODUCTION •HISTORY •TERMINOLOGY •DEFINTION •CLASSIFICATION •CHEMICAL COMPOUND IN CEMENT •MANUFACTURE •CHARACTERISTICS…

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Slide 1 Slide 2  Answer in your notebook  A water molecule contains which of the following bonds? ◦ A. Ionic Bond ◦ B. Non-Polar Covalent Bond ◦ C. Polar Covalent…

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