সাধারণ বিজ্ঞান

1. Every atom of Carbon-di-oxide contains - Oxygen and - Carbon.

a. 1, 2

b. 2, 1

c. 1, 1

d. 2, 2

e. None of these

2. Who discovered Oxygen in 1774?

a. Galileo

b. Joseph Priestly

c. Niel Bohre

d. Newton

e. None of these

3. What is the scientific name of Vitamin C?

a. Nitric Acid

b. Ascorbic Acid

c. Blur Berry

d. Black Berry

e. None of these

4. বাংলাদেশে ইন্স্যুরেন্স কোম্পানিগুলোর ক্রেডিট রেটিং এ কোন পদ্ধতি অনুসরণ করা হয়?

a. CARMELS

b. CARMEL

c. AMELSE

d. CAMEL

5. Insects that can transmit diseases to humans are referred to as

a. Vectors

b. Carriers

c. Reservoir

d. Incubators

6. Contact lenses are made from

a. Polymers

b. Polyvinyl chloride

c. Polystryrene

d. Teflon

7. A nuiversal donor is a person having blood group of .

a. A +

b. B +

c. O+

d. AB +

8. The process of fragmentation of DNA in Genetic Engineering is known as -

a. Electro synthesis

b. Electrophoresis

c. Electro analysis

d. Electrolysis