1) Gas. It ranks third among the components of the atmosphere.
a) nitrogen b) oxygen
c) Argon d) Helium
2) By cooling the mixture of atmospheric gases to a temperature of -200 degrees Celsius, a very cold mixture of several liquids is formed, which is called
a) Cold gas b) Liquid air
c) troposphere d) carbon dioxide
3) As the lightest noble gas, it is in the table group.
a) Helium _ 2 b) Helium _ 18
C) Argon _ 18 T) Neon _ 18
4) Carbon monoxide gas from carbon dioxide gas, so the CO produced in the combustion reaction is converted into CO2 under suitable conditions, and if the hydrocarbon combustion is incomplete, it is accompanied by the production of toxic gas.
a) More stable – CO2 b) More unstable – CO2 c) More stable – CO d) More unstable – CO
5) They are among the important factors in determining the characteristics of the atmosphere.
a) mass and pressure b) mass and volume
c) temperature and pressure d) volume and pressure
6) It is one of the uses of argon gas.
A) Filling meteorological, recreational and promotional balloons
b) Creating an inert environment in welding
C) in the manufacture of incandescent lamps
t) b and p
7) What is the boiling point of argon at -186 degrees Celsius in Kelvin?
a) 13k b) 87k c) 78k d) 459k
8) What is the coefficient of O2 in the following reaction after equilibrium?
CH3NH2+O2 > CO2+ H2O+N2
A) 10 B) 8 C) 9 T) 7
9) What will be the ratio of HF to H2O coefficient in the following equation after balancing?
CaSiO3 + HF -> SiF4+CaF2+H2O
a) 3 b) 1.3 one third c) 2 d) 1.2 one second
10) What is the ratio of unbonded electrons to bonded electrons in the Lewis structure of SO3 (sulfur trioxide)?
a) 1.2 one half b) 10.3 ten to three
c) 2 d) 3.10 three tenths
11) Which option is the correct name for Cr2O3 and ZnO?
A) chromium(III) oxide-zinc(II) oxide
b) Chromium (III) oxide – zinc oxide
c) Chromium (II) oxide – zinc oxide
T) chromium (II) oxide – zinc (II) oxide
12) How do each of the following things change by moving from the ground level to a height of 48 km?
Air pressure – number of particles in a one liter sample – air temperature
A) We have low-low temperature decrease up to 12 km altitude and then temperature increase up to 50 km altitude.
b) Low – high – we have a decrease up to an altitude of 12 km and then an increase in temperature up to an altitude of 50 km.
c) high – low – we have an increase up to 12 km altitude and then a decrease in temperature up to 50 km altitude.
t) High – high – we have an increase up to 12 km altitude and then a decrease in temperature up to 50 km altitude.
13) and the gas is separated from it in solid form by cooling the air to 0°C and -80°C, respectively.
A) nitrogen – carbon dioxide
b) water vapor – carbon dioxide
c) water vapor – argon
t) water vapor – oxygen
14) Which of the following gases is created only by burning coal?
a) carbon dioxide b) carbon monoxide c) sulfur dioxide d) water vapor
15) Magnesium oxide solution in water has the property of turning litmus paper into color.
a) Alkaline – blue b) Acidic – blue
c) Acidic – red d) Alkaline – red
16) Which option is the name of the compound P2O5 and the formula of the compound sulfur hexafluoride respectively?
A) Phosphorus pentaoxide – SF6
b) Diphosphorus pentaoxide-SF4
c) Diphosphorus pentaoxide – SF6
T) Phosphorus pentaoxide – SF4
17) Which option is the number of non-bonding pairs in CH3 ion with a negative charge and CH3 ion with a positive charge respectively?
a) 2- does not have b) 1- does not have
C) 1-2-1 T) 2-1
18) in Eq
(NH4)2Cr2O7 > Cr2O3+N2 +H2O
What is the sum of the coefficients after balancing?
a) 6 b) 7 c) 8 d) 10
19) There are 10 grams of oxygen gas in capsule number one and 15 grams of oxygen gas in another similar capsule number two. Which capsule has the highest pressure?
a) It is equal in both.
b) It is more in capsule number one.
c) It is more in capsule number two.
t) Gas pressure has nothing to do with the amount of gas.
20) Water production equation
2H2 + O2 -> 2H2O
It shows that if 4 grams of hydrogen reacts with 32 grams of oxygen, water is produced? (Atomic mass: H=1, O=16)
a) 18 grams b) 9 grams
c) 36 grams d) it is not known
This post is written by leonstore8