The area under velocity time graph represents

(a)

Velocity of the moving object

(b)

Displacement covered by the moving object

(c)

Speed of the moving object

The slope of the velocity time graph for uniformly accelerated motion give _____

(a)

speed

(b)

acceleration

(c)

displacement

(d)

velocity

______ is essential to perform separation by solvent extraction method.

(a)

Separating funnel

(b)

centrifuge machine

(c)

filter paper

(d)

sieve

The pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant_______

(a)

volume

(b)

temperature

(c)

pressure

(d)

rate

Shoots are said to_____________.

(a)

Negative phototropism

(b)

Positive phototropism

(c)

Positive hydrotropism

(d)

Negative chemotropism

The animal without skull is

(a)

Acrania

(b)

Acephalia

(c)

Apteria

(d)

Acoelomate

All life can be divided into________major categories.

(a)

one

(b)

two

(c)

three

(d)

four

Scaly skin, nerve disorders are due to the deficiency of ______

(a)

Vitamin B₃

(b)

Vitamin B₆

(c)

Vitamin B₁₂

(d)

Vitamin B₂

Lipases are _________.

(a)

Carbohydrates

(b)

Vitamins

(c)

Minerals

(d)

Enzymes

SI unit of temperature is

(a)

fahrenheit

(b)

joule

(c)

celsius

(d)

kelvin

The temperature at which a liquid gets converted into its vapour state is called its________

(a)

melting point

(b)

boiling point

(c)

dew point

(d)

freezing point

Noble gases are placed in_____________ group in the modern periodic table.

(a)

13^th

(b)

18^th

(c)

17^th

(d)

2^nd

Bond formed between a metal and non-metal atom is usually____________

(a)

ionic bond

(b)

covalent bond

(c)

co-ordinate bond

(d)

metallic bond

Bases ionise in water to form______ions

(a)

H⁺

(b)

H₃O⁺

(c)

OH^-

(d)

O^2-

Nerve cell does not contains

(a)

axon

(b)

nerve endings

(c)

tendons

(d)

dendrites

Gastric glands do not secrete__________

(a)

renin

(b)

pepsin

(c)

lipase

(d)

none of the above

An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom as shown in graph. This is because

(a)

more volume of liquid is dispaced

(b)

more weight of liquid is displaced

(c)

pressure increases with depth

(d)

all the above

Number of free electron(s) in each carbon of graphite is

(a)

one

(b)

Two

(c)

Three

(d)

Four

In some xerophytes, leaves are modified into spines as an adaptation ________________.

(a)

to reduce transpiration rate

(b)

to store water

(c)

to reduce consumption of water

(d)

all of the above

Microbes that generally enter the body through nose are likely to affect

(a)

gut

(b)

lungs

(c)

liver

(d)

lymph nodes