Home > General Knowledge > General Science

General Science - Questions and Answers

Practice questions on General Science.

Ready to test your skills?

Take a timed mock test specifically for General Science.

Start Mock Test
1926. All the following are constituents of chlorophyll, except
A. carbon
B. hydrogen
C. calcium
D. magnesium
Explanation:
1927. Which of the following take place when the subject speaks untruth while being tested by the polygraph instrument ? 1. His blood pressure goes up. 2. His pulse quickens. 3. His skin darkens. 4. He sneezes.
A. 1 and 2
B. 3 and 4
C. 1, 2 and 3
D. 2, 3 and 4
Explanation:
1928. Permanent hardness of water may be removed by the addition of
A. alum
B. sodium carbonate
C. lime
D. potassium permanganate
Explanation:
1929. In TV transmission
A. sound and video signals are transmitted simultaneously.
B. sound is transmitted first and then the video signal follows.
C. video signal is transmitted first, follwed by sound signal.
D. sound and video signals are transmitted from different places at the same time.
Explanation:
1930. What is the unit for measuring the pitch or frequency of sound ?
A. Coulomb
B. Hum
C. Cycles
D. Decibel
Explanation:
« Prev123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483Next »