Lecturer Chemistry Past Paper 2017 for preparation. ( ARID PMS AJKPSC )
Which of the following is the basic component of smog?
A) PAN
B) PBN
C) NO2
D) All of these
Which is the sequence of regions of the electromagnetic spectrum?
A) Cosmic rays, X-rays, Visible and UV
B) Microwave, X-rays, Visible and UV
C) UV, Cosmic rays, Microwave, X-rays and Visible
D) Visible, UV, X-rays, and Cosmic rays
Which of the following is the weakest base?
A) Ammonia
B) Pyridine
C) Pyrrole
D) Aniline
the pH of human blood is:
A) 7.0
B) 7.35
C) 7.85
D) 6.78
Which set of hybrid orbital has a square planar shape?
A) Sp3
B) dsp2
C) dsp3
D) d2sp3
The mass of a particle is:
A) Four item that of H atom
B) Four atom the mass of one amu
C) Four items 0.166 x 10-26 kg
D) All statements are correct
The radioactive isotope used for testing deep-seated cancer growth is?
A) I-131
B) P-30
C) Co-60
D) P-32
Which enthalpy change is not used in born Haber cycle?
A) ΔH1
B) ΔH2
C) ΔH3
D) ΔH4
Hydrolysis reaction of fats with caustic soda is known as?
A) Acetylene
B) Saponification
C) Carboxylation
D) Esterification
Which metal is used in thermite process because of its activity?
A) Iron
B) Copper
C) Aluminum
D) Zinc
SN1 reaction proceeds via the formation of:
A) Free radical
B) Carbanion
C) Carbocation
D) Transition state
The technique which involves the study of absorption of radiant energy (in UV visible region) by neutral atoms in the gaseous state is called?
A) Atomic Emission Spectroscopy
B) Atomic Absorption Spectroscopy
C) Flame Spectroscopy
D) Nuclear Magnetic Resonance Spectroscopy
Group VI B Transition elements contain:
A) Mn, Te, Re
B) Cr, Mo, W
C) Zn, Cd, Hg
D) Fe, Ru, Os
The example of Primary standard is?
A) Benzoic acid
B) KOH
C) NaOH
D) H2SO4
What is the relationship between Cp and Cv?
A) Cp+Cv = R
B) Cp- Cv = R
C) Cp+Cv = 2R
D) Cp -Cv = 2R
The atomicity of one molecule of hemoglobin is:
A) 10,000
B) 17,000
C) 60,000
D) 100,000
Bakelite is obtained from phenol by reacting with:
A) Chlorobenzene
B) Acetone
C) Acetaldehyde
D) Formaldehyde
The derivatives of cyclopentane perhydro phenanthrene are called?
A) Phospholipids
B) Proteins
C) Steroid
D) None of these
Nitration of toluene takes place at:
A) Ortho position
B) Para position
C) Both A & B
D) Meta position
Vinyl benzene is also called:
A) Styrene
B) Cumence
C) Allen
D) n- butyl chloride
Which one of the following pairs have the same electronic configuration as possessed by Neon?
A) K+Cl–
B) Na+Cl–
C) Na+Mg+
D) Na+F–
How many moles of sodium are present in 0.1g of sodium?
A) 4.03 x 10-3
B) 4. 3 x 10-3
C) 4.03 x 10-2
D) 4.01 x 10-3
Which of the following is an example of copolymer?
A) Polystyrene
B) Nylon
C) Polypropylene
D) Polyvinyl chloride
Keeping in mind the electrode potential which one of the following reaction is feasible?
A) Zn2+ + Cu → Cu2+ + Zn
B) Zn + MgSO4 → ZnSO4 + Mg
C) Fe + CuSO4 → FeSO4 + Cu
D) Cd + MgSO4 → CdS4 + Mg
The electrode potential which one of the following reaction is feasible?
A) Zn2+ + Cu → Cu2+ + Zn
B) Zn + MgSO4 → ZnSO4 + Mg
C) Fe + CuSO4 → FeSO4 + Cu
D) Cd + MgSO4 → CdSO4 + Mg
Which of the following has maximum vapor pressure?
A) HCl
B) HBr
C) HI
D) HF
What is the percentage of Nitrogen in NH4NO3?
A) 35%
B) 30%
C) 38%
D) 40%
Order of reactivity of alkenes with hydrogen halides is:
A) HF > HBr > HI
B) HI > HBr > HCl
C) HI > HBr > HF
D) HI > HF > HCl
Which one of the following has smallest radius?
A) Na1+
B) Mg3+
C) Al3+
D) Si4+
The chemical name of artificial milk is:
A) SnOCl
B) CdOCl
C) BiOCl
D) SnOCl2