The simplest kind of matter which cannot be further split up into simpler substances by chemical reactions is called:
A. solution
B. compound
C. element
D. alloy
The atoms of same element which have the same atomic number but different mass numbers are known as:
A. isomers
B. isotopes
C. isomorphism
D. isobars
“A chemical compound always contains the same elements combined together in the same proportion or ratio” is the statement of:
A. Law of conservation of mass
B. Law of multiple proportions
C. Law of constant composition
D. Law of reciprocal proportion
Among the following, which in not present in animal cell
A. Cell membrane
B. Cell wall
C. Cytoplasm
D. None of these
When a French bean germinates in soil, a hook like structure emerges that structure is called:
A. Hypocotyl
B. Cotyledons
C. Embryo
D. None of these
The government of Benazir Bhutto was dismissed for the second time on November 1996 by
A. Chief justice of Pakistan
B. President of Pakistan
C. National speaker of Pakistan
D. Chairman of Pakistan
With Muhammad Ali Jinnah as Muslims league president for the first time, the meeting of both the league and congress were held at:
A. Poona
B. Bombay
C. Calcutta
D. Lucknow
Indus water treaty was signed between which countries:
A. India and China
B. Pak and china
C. Pak and India
D. Pakistan and Afghanistan