SS 1 Chem 2nd Term
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1 / 30
The only alkaline gas that changes moist red litmus paper to blue is________
2 / 30
Hydrocarbon is known to contain _________________
3 / 30
Deep green colour of flame indicate the presence of _________
4 / 30
Brown ring test is used to confirm __________
5 / 30
_________ is an example of electronegative elements.
6 / 30
Iron is the _________ most abundant metal in the earths crust
7 / 30
Aluminium reacts readily with all common mineral acids except __________
8 / 30
The metallic particles are held together in a __________ of closely packed sphere.
9 / 30
What is the colour of sodium flame?
10 / 30
The molecules are held together by _______ intermolecular forces
11 / 30
The molar mass of any substance is expressed in__________
12 / 30
Vander Wall force of attraction can be grouped as _______
13 / 30
________ are fast moving stream of electrons.
14 / 30
A lone pair of electron is found in ___________
15 / 30
The neutron-proton ration determines the stability of an element.
16 / 30
2Na + H2O ~ Na2O + H2
The above reaction shows that sodium reacts violently with cold water giving out a lot of heat and liberating ________
17 / 30
Alpha particle was deflected towards negative plate while Beta deflected toward __________
18 / 30
The following caused fluorescence of matter except ________
19 / 30
Sodium tarnishes easily when exposed to air due to presence of ________
20 / 30
______is the process in which the nucleus of a heavy element is split into two nuclei of nearly equal mass with a release of energy and radiation
21 / 30
The spontaneous disintegration/decay of nucleus of an element is due to its ___________
22 / 30
Nuclear reaction releases ________
23 / 30
Sodium reacts explosively with cold water to liberate ____________
24 / 30
_________ is the process in which two or more light nuclei of elements combine together to form a heavier nucleus with release of both energy and radiation.
25 / 30
The following are applications of radiactivity except ________
26 / 30
Both metallic substance and electrovalent compound are similar because ________
27 / 30
The unit of relative molecular mass is __________
28 / 30
Aluminum can not react with either dilute HNO3 or conc. HNO3 due to formation of a protective layer of ____________
29 / 30
_______ is an example of radioactive element.
30 / 30
___________ is an example of radioactive detectors.
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The average score is 38%
