Q1.Disease or infections which are transmitted through sexual intercourse are collectively called
Answer : Option BExplaination / Solution:
Venereal Diseases (VD) also referred to as Sexually transmitted infections (STI) and sexually transmitted diseases (STD) are infections that are commonly spread by sex, especially vaginal intercourse, anal sex or oral sex. Most STIs initially do not cause symptoms.
Answer : Option DExplaination / Solution:
Modern Periodic Law can be stated that the physical and chemical properties of the elements are periodic functions of their atomic numbers
Q5.If a positive charge moves in the direction of the electric field
Answer : Option BExplaination / Solution:
A positive charge experiences a force in the direction of the field. If it moves in the direction of the field, positive work is done by the electric field on the charge. Potential energy of the charge increases only when an external source does work on the charge against the direction of the field- eg: when the charge is moved against the direction of the field
Q6.Proteins that form huge pores in the membrane of the certain organelles and bacteria are called as
Answer : Option AExplaination / Solution:
The porinsare proteins that form huge pores in the outer membranes of the plastids, mitochondria and some bacteria allowing molecules up to the size of small proteins to pass through.
Answer : Option DExplaination / Solution:
As we move down the group in periodic table , metallic character increases so Bi is a metal thus its oxide is basic.